diff --git a/.gitmodules b/.gitmodules
index 518a2795..64941492 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,6 @@
+[submodule "modules/autosuggestions/external"]
+	path = modules/autosuggestions/external
+	url = https://github.com/zsh-users/zsh-autosuggestions
 [submodule "modules/history-substring-search/external"]
 	path = modules/history-substring-search/external
 	url = https://github.com/zsh-users/zsh-history-substring-search.git
@@ -16,6 +19,3 @@
 [submodule "modules/prompt/functions/pure"]
 	path = modules/prompt/external/pure
 	url = https://github.com/sindresorhus/pure.git
-[submodule "modules/autosuggestions/external"]
-	path = modules/autosuggestions/external
-	url = https://github.com/tarruda/zsh-autosuggestions
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 00000000..d4171477
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,20 @@
+Copyright (c) 2009-2011 Robby Russell and contributors
+Copyright (c) 2011-2017 Sorin Ionescu and contributors
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+of the Software, and to permit persons to whom the Software is furnished to do
+so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE
diff --git a/README.md b/README.md
index 9da5e967..9317bec1 100644
--- a/README.md
+++ b/README.md
@@ -13,23 +13,25 @@ version is 4.3.17.
 
   1. Launch Zsh:
 
-        zsh
+        `zsh`
 
   2. Clone the repository:
 
-        git clone --recursive https://github.com/zephyrus/prezto.git "${ZDOTDIR:-$HOME}/.zprezto"
+        `git clone --recursive https://github.com/zephyrus/prezto.git "${ZDOTDIR:-$HOME}/.zprezto"`
 
   3. Create a new Zsh configuration by copying the Zsh configuration files
      provided:
 
+        ```
         setopt EXTENDED_GLOB
         for rcfile in "${ZDOTDIR:-$HOME}"/.zprezto/runcoms/^README.md(.N); do
           ln -s "$rcfile" "${ZDOTDIR:-$HOME}/.${rcfile:t}"
         done
+        ```
 
   4. Set Zsh as your default shell:
 
-        chsh -s /bin/zsh
+        `chsh -s /bin/zsh`
 
   5. Open a new Zsh terminal window or tab.
 
@@ -83,29 +85,7 @@ The [Zsh Reference Card][7] and the [zsh-lovers][8] man page are indispensable.
 License
 -------
 
-(The MIT License)
-
-Copyright (c) 2009-2011 Robby Russell and contributors.
-
-Copyright (c) 2011-2015 Sorin Ionescu and contributors.
-
-Permission is hereby granted, free of charge, to any person obtaining a copy of
-this software and associated documentation files (the "Software"), to deal in
-the Software without restriction, including without limitation the rights to
-use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
-of the Software, and to permit persons to whom the Software is furnished to do
-so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
+This project is licensed under the MIT License.
 
 [1]: http://www.zsh.org
 [2]: http://i.imgur.com/nrGV6pg.png "sorin theme"
diff --git a/init.zsh b/init.zsh
index 6b5254fb..665e6c40 100644
--- a/init.zsh
+++ b/init.zsh
@@ -25,13 +25,13 @@ unset min_zsh_version
 function pmodload {
   local -a pmodules
   local pmodule
-  local pfunction_glob='^([_.]*|prompt_*_setup|README*)(-.N:t)'
+  local pfunction_glob='^([_.]*|prompt_*_setup|README*|*~)(-.N:t)'
 
   # $argv is overridden in the anonymous function.
   pmodules=("$argv[@]")
 
   # Add functions to $fpath.
-  fpath=(${pmodules:+${ZDOTDIR:-$HOME}/.zprezto/modules/${^pmodules}/functions(/FN)} $fpath)
+  fpath=(${pmodules:+$ZPREZTODIR/modules/${^pmodules}/functions(/FN)} $fpath)
 
   function {
     local pfunction
@@ -40,7 +40,7 @@ function pmodload {
     setopt LOCAL_OPTIONS EXTENDED_GLOB
 
     # Load Prezto functions.
-    for pfunction in ${ZDOTDIR:-$HOME}/.zprezto/modules/${^pmodules}/functions/$~pfunction_glob; do
+    for pfunction in $ZPREZTODIR/modules/${^pmodules}/functions/$~pfunction_glob; do
       autoload -Uz "$pfunction"
     done
   }
@@ -49,19 +49,19 @@ function pmodload {
   for pmodule in "$pmodules[@]"; do
     if zstyle -t ":prezto:module:$pmodule" loaded 'yes' 'no'; then
       continue
-    elif [[ ! -d "${ZDOTDIR:-$HOME}/.zprezto/modules/$pmodule" ]]; then
+    elif [[ ! -d "$ZPREZTODIR/modules/$pmodule" ]]; then
       print "$0: no such module: $pmodule" >&2
       continue
     else
-      if [[ -s "${ZDOTDIR:-$HOME}/.zprezto/modules/$pmodule/init.zsh" ]]; then
-        source "${ZDOTDIR:-$HOME}/.zprezto/modules/$pmodule/init.zsh"
+      if [[ -s "$ZPREZTODIR/modules/$pmodule/init.zsh" ]]; then
+        source "$ZPREZTODIR/modules/$pmodule/init.zsh"
       fi
 
       if (( $? == 0 )); then
         zstyle ":prezto:module:$pmodule" loaded 'yes'
       else
         # Remove the $fpath entry.
-        fpath[(r)${ZDOTDIR:-$HOME}/.zprezto/modules/${pmodule}/functions]=()
+        fpath[(r)${ZPREZTODIR}/modules/${pmodule}/functions]=()
 
         function {
           local pfunction
@@ -71,7 +71,7 @@ function pmodload {
           setopt LOCAL_OPTIONS EXTENDED_GLOB
 
           # Unload Prezto functions.
-          for pfunction in ${ZDOTDIR:-$HOME}/.zprezto/modules/$pmodule/functions/$~pfunction_glob; do
+          for pfunction in $ZPREZTODIR/modules/$pmodule/functions/$~pfunction_glob; do
             unfunction "$pfunction"
           done
         }
@@ -86,6 +86,12 @@ function pmodload {
 # Prezto Initialization
 #
 
+# This finds the directory prezto is installed to so plugin managers don't need
+# to rely on dirty hacks to force prezto into a directory. Additionally, it
+# needs to be done here because inside the pmodload function ${0:h} evaluates to
+# the current directory of the shell rather than the prezto dir.
+ZPREZTODIR=${0:h}
+
 # Source the Prezto configuration file.
 if [[ -s "${ZDOTDIR:-$HOME}/.zpreztorc" ]]; then
   source "${ZDOTDIR:-$HOME}/.zpreztorc"
diff --git a/modules/autosuggestions/external b/modules/autosuggestions/external
index f0a74557..9cfaf5d3 160000
--- a/modules/autosuggestions/external
+++ b/modules/autosuggestions/external
@@ -1 +1 @@
-Subproject commit f0a745576ff69fa608421ee7214d4cd77b43e62f
+Subproject commit 9cfaf5d3424ceb5fedd2c7e3253f823faae74383
diff --git a/modules/completion/external b/modules/completion/external
index 3a2bb878..72af5d08 160000
--- a/modules/completion/external
+++ b/modules/completion/external
@@ -1 +1 @@
-Subproject commit 3a2bb8781d32d05d1bf05deeeb476beb651e8272
+Subproject commit 72af5d08f1c07507d74103af039e98a2791fccb5
diff --git a/modules/dpkg/init.zsh b/modules/dpkg/init.zsh
index e1f479b0..69d524fc 100644
--- a/modules/dpkg/init.zsh
+++ b/modules/dpkg/init.zsh
@@ -54,4 +54,4 @@ fi
 alias deb-build='time dpkg-buildpackage -rfakeroot -us -uc'
 
 # Removes all kernel images and headers, except for the ones in use.
-alias deb-kclean='sudo aptitude remove -P "?and(~i~nlinux-(ima|hea) ?not(~n`uname -r`))"'
+alias deb-kclean='sudo aptitude remove -P "?and(~i~nlinux-(ima|hea) ?not(~n$(uname -r)))"'
diff --git a/modules/editor/init.zsh b/modules/editor/init.zsh
index 9aa64d64..c77e65c9 100644
--- a/modules/editor/init.zsh
+++ b/modules/editor/init.zsh
@@ -326,4 +326,4 @@ else
   print "prezto: editor: invalid key bindings: $key_bindings" >&2
 fi
 
-unset key{,map,bindings}
+unset key{,map,_bindings}
diff --git a/modules/git/README.md b/modules/git/README.md
index c2d0449c..37194126 100644
--- a/modules/git/README.md
+++ b/modules/git/README.md
@@ -29,6 +29,10 @@ This setting affects all aliases and functions that call `git-status`.
 Aliases
 -------
 
+Aliases are enabled by default. You can disable them with:
+
+    zstyle ':prezto:module:git:alias' skip 'yes'
+
 ### Git
 
   - `g` is short for `git`.
@@ -214,6 +218,7 @@ The following aliases may shadow system commands:
 
   - `gpt` shadows the [GUID partition table maintenance utility][4].
   - `gs` shadows the [Ghostscript][5].
+  - `gb` shadows the [GB][9].
 
 If you frequently use the above commands, you may wish to remove said aliases
 from this module or to disable them at the bottom of the zshrc with `unalias`.
@@ -332,3 +337,4 @@ Authors
 [6]: https://github.com/sorin-ionescu/prezto/issues
 [7]: https://github.com/sorin-ionescu/prezto/issues/219
 [8]: http://www.kernel.org/pub/software/scm/git/docs/git-log.html
+[9]: https://getgb.io/
diff --git a/modules/git/alias.zsh b/modules/git/alias.zsh
index ffa854dd..48455147 100644
--- a/modules/git/alias.zsh
+++ b/modules/git/alias.zsh
@@ -26,156 +26,159 @@ zstyle -s ':prezto:module:git:status:ignore' submodules '_git_status_ignore_subm
 # Aliases
 #
 
-# Git
-alias g='git'
-
-# Branch (b)
-alias gb='git branch'
-alias gbc='git checkout -b'
-alias gbl='git branch -v'
-alias gbL='git branch -av'
-alias gbx='git branch -d'
-alias gbX='git branch -D'
-alias gbm='git branch -m'
-alias gbM='git branch -M'
-alias gbs='git show-branch'
-alias gbS='git show-branch -a'
-
-# Commit (c)
-alias gc='git commit --verbose'
-alias gca='git commit --verbose --all'
-alias gcm='git commit --message'
-alias gco='git checkout'
-alias gcO='git checkout --patch'
-alias gcf='git commit --amend --reuse-message HEAD'
-alias gcF='git commit --verbose --amend'
-alias gcp='git cherry-pick --ff'
-alias gcP='git cherry-pick --no-commit'
-alias gcr='git revert'
-alias gcR='git reset "HEAD^"'
-alias gcs='git show'
-alias gcl='git-commit-lost'
-
-# Conflict (C)
-alias gCl='git status | sed -n "s/^.*both [a-z]*ed: *//p"'
-alias gCa='git add $(gCl)'
-alias gCe='git mergetool $(gCl)'
-alias gCo='git checkout --ours --'
-alias gCO='gCo $(gCl)'
-alias gCt='git checkout --theirs --'
-alias gCT='gCt $(gCl)'
-
-# Data (d)
-alias gd='git ls-files'
-alias gdc='git ls-files --cached'
-alias gdx='git ls-files --deleted'
-alias gdm='git ls-files --modified'
-alias gdu='git ls-files --other --exclude-standard'
-alias gdk='git ls-files --killed'
-alias gdi='git status --porcelain --short --ignored | sed -n "s/^!! //p"'
-
-# Fetch (f)
-alias gf='git fetch'
-alias gfc='git clone'
-alias gfm='git pull'
-alias gfr='git pull --rebase'
-
-# Grep (g)
-alias gg='git grep'
-alias ggi='git grep --ignore-case'
-alias ggl='git grep --files-with-matches'
-alias ggL='git grep --files-without-matches'
-alias ggv='git grep --invert-match'
-alias ggw='git grep --word-regexp'
-
-# Index (i)
-alias gia='git add'
-alias giA='git add --patch'
-alias giu='git add --update'
-alias gid='git diff --no-ext-diff --cached'
-alias giD='git diff --no-ext-diff --cached --word-diff'
-alias gir='git reset'
-alias giR='git reset --patch'
-alias gix='git rm -r --cached'
-alias giX='git rm -rf --cached'
-
-# Log (l)
-alias gl='git log --topo-order --pretty=format:"${_git_log_medium_format}"'
-alias gls='git log --topo-order --stat --pretty=format:"${_git_log_medium_format}"'
-alias gld='git log --topo-order --stat --patch --full-diff --pretty=format:"${_git_log_medium_format}"'
-alias glo='git log --topo-order --pretty=format:"${_git_log_oneline_format}"'
-alias glg='git log --topo-order --all --graph --pretty=format:"${_git_log_oneline_format}"'
-alias glb='git log --topo-order --pretty=format:"${_git_log_brief_format}"'
-alias glc='git shortlog --summary --numbered'
-
-# Merge (m)
-alias gm='git merge'
-alias gmC='git merge --no-commit'
-alias gmF='git merge --no-ff'
-alias gma='git merge --abort'
-alias gmt='git mergetool'
-
-# Push (p)
-alias gp='git push'
-alias gpf='git push --force'
-alias gpa='git push --all'
-alias gpA='git push --all && git push --tags'
-alias gpt='git push --tags'
-alias gpc='git push --set-upstream origin "$(git-branch-current 2> /dev/null)"'
-alias gpp='git pull origin "$(git-branch-current 2> /dev/null)" && git push origin "$(git-branch-current 2> /dev/null)"'
-
-# Rebase (r)
-alias gr='git rebase'
-alias gra='git rebase --abort'
-alias grc='git rebase --continue'
-alias gri='git rebase --interactive'
-alias grs='git rebase --skip'
-
-# Remote (R)
-alias gR='git remote'
-alias gRl='git remote --verbose'
-alias gRa='git remote add'
-alias gRx='git remote rm'
-alias gRm='git remote rename'
-alias gRu='git remote update'
-alias gRp='git remote prune'
-alias gRs='git remote show'
-alias gRb='git-hub-browse'
-
-# Stash (s)
-alias gs='git stash'
-alias gsa='git stash apply'
-alias gsx='git stash drop'
-alias gsX='git-stash-clear-interactive'
-alias gsl='git stash list'
-alias gsL='git-stash-dropped'
-alias gsd='git stash show --patch --stat'
-alias gsp='git stash pop'
-alias gsr='git-stash-recover'
-alias gss='git stash save --include-untracked'
-alias gsS='git stash save --patch --no-keep-index'
-alias gsw='git stash save --include-untracked --keep-index'
-
-# Submodule (S)
-alias gS='git submodule'
-alias gSa='git submodule add'
-alias gSf='git submodule foreach'
-alias gSi='git submodule init'
-alias gSI='git submodule update --init --recursive'
-alias gSl='git submodule status'
-alias gSm='git-submodule-move'
-alias gSs='git submodule sync'
-alias gSu='git submodule foreach git pull origin master'
-alias gSx='git-submodule-remove'
-
-# Working Copy (w)
-alias gws='git status --ignore-submodules=${_git_status_ignore_submodules} --short'
-alias gwS='git status --ignore-submodules=${_git_status_ignore_submodules}'
-alias gwd='git diff --no-ext-diff'
-alias gwD='git diff --no-ext-diff --word-diff'
-alias gwr='git reset --soft'
-alias gwR='git reset --hard'
-alias gwc='git clean -n'
-alias gwC='git clean -f'
-alias gwx='git rm -r'
-alias gwX='git rm -rf'
+if ! zstyle -t ':prezto:module:git:alias' skip 'yes'; then
+  # Git
+  alias g='git'
+
+  # Branch (b)
+  alias gb='git branch'
+  alias gbc='git checkout -b'
+  alias gbl='git branch -v'
+  alias gbL='git branch -av'
+  alias gbx='git branch -d'
+  alias gbX='git branch -D'
+  alias gbm='git branch -m'
+  alias gbM='git branch -M'
+  alias gbs='git show-branch'
+  alias gbS='git show-branch -a'
+
+  # Commit (c)
+  alias gc='git commit --verbose'
+  alias gca='git commit --verbose --all'
+  alias gcm='git commit --message'
+  alias gco='git checkout'
+  alias gcO='git checkout --patch'
+  alias gcf='git commit --amend --reuse-message HEAD'
+  alias gcF='git commit --verbose --amend'
+  alias gcp='git cherry-pick --ff'
+  alias gcP='git cherry-pick --no-commit'
+  alias gcr='git revert'
+  alias gcR='git reset "HEAD^"'
+  alias gcs='git show'
+  alias gcl='git-commit-lost'
+
+  # Conflict (C)
+  alias gCl='git status | sed -n "s/^.*both [a-z]*ed: *//p"'
+  alias gCa='git add $(gCl)'
+  alias gCe='git mergetool $(gCl)'
+  alias gCo='git checkout --ours --'
+  alias gCO='gCo $(gCl)'
+  alias gCt='git checkout --theirs --'
+  alias gCT='gCt $(gCl)'
+
+  # Data (d)
+  alias gd='git ls-files'
+  alias gdc='git ls-files --cached'
+  alias gdx='git ls-files --deleted'
+  alias gdm='git ls-files --modified'
+  alias gdu='git ls-files --other --exclude-standard'
+  alias gdk='git ls-files --killed'
+  alias gdi='git status --porcelain --short --ignored | sed -n "s/^!! //p"'
+
+  # Fetch (f)
+  alias gf='git fetch'
+  alias gfc='git clone'
+  alias gfm='git pull'
+  alias gfr='git pull --rebase'
+
+  # Grep (g)
+  alias gg='git grep'
+  alias ggi='git grep --ignore-case'
+  alias ggl='git grep --files-with-matches'
+  alias ggL='git grep --files-without-matches'
+  alias ggv='git grep --invert-match'
+  alias ggw='git grep --word-regexp'
+
+  # Index (i)
+  alias gia='git add'
+  alias giA='git add --patch'
+  alias giu='git add --update'
+  alias gid='git diff --no-ext-diff --cached'
+  alias giD='git diff --no-ext-diff --cached --word-diff'
+  alias gir='git reset'
+  alias giR='git reset --patch'
+  alias gix='git rm -r --cached'
+  alias giX='git rm -rf --cached'
+
+  # Log (l)
+  alias gl='git log --topo-order --pretty=format:"${_git_log_medium_format}"'
+  alias gls='git log --topo-order --stat --pretty=format:"${_git_log_medium_format}"'
+  alias gld='git log --topo-order --stat --patch --full-diff --pretty=format:"${_git_log_medium_format}"'
+  alias glo='git log --topo-order --pretty=format:"${_git_log_oneline_format}"'
+  alias glg='git log --topo-order --all --graph --pretty=format:"${_git_log_oneline_format}"'
+  alias glb='git log --topo-order --pretty=format:"${_git_log_brief_format}"'
+  alias glc='git shortlog --summary --numbered'
+
+  # Merge (m)
+  alias gm='git merge'
+  alias gmC='git merge --no-commit'
+  alias gmF='git merge --no-ff'
+  alias gma='git merge --abort'
+  alias gmt='git mergetool'
+
+  # Push (p)
+  alias gp='git push'
+  alias gpf='git push --force-with-lease'
+  alias gpF='git push --force'
+  alias gpa='git push --all'
+  alias gpA='git push --all && git push --tags'
+  alias gpt='git push --tags'
+  alias gpc='git push --set-upstream origin "$(git-branch-current 2> /dev/null)"'
+  alias gpp='git pull origin "$(git-branch-current 2> /dev/null)" && git push origin "$(git-branch-current 2> /dev/null)"'
+
+  # Rebase (r)
+  alias gr='git rebase'
+  alias gra='git rebase --abort'
+  alias grc='git rebase --continue'
+  alias gri='git rebase --interactive'
+  alias grs='git rebase --skip'
+
+  # Remote (R)
+  alias gR='git remote'
+  alias gRl='git remote --verbose'
+  alias gRa='git remote add'
+  alias gRx='git remote rm'
+  alias gRm='git remote rename'
+  alias gRu='git remote update'
+  alias gRp='git remote prune'
+  alias gRs='git remote show'
+  alias gRb='git-hub-browse'
+
+  # Stash (s)
+  alias gs='git stash'
+  alias gsa='git stash apply'
+  alias gsx='git stash drop'
+  alias gsX='git-stash-clear-interactive'
+  alias gsl='git stash list'
+  alias gsL='git-stash-dropped'
+  alias gsd='git stash show --patch --stat'
+  alias gsp='git stash pop'
+  alias gsr='git-stash-recover'
+  alias gss='git stash save --include-untracked'
+  alias gsS='git stash save --patch --no-keep-index'
+  alias gsw='git stash save --include-untracked --keep-index'
+
+  # Submodule (S)
+  alias gS='git submodule'
+  alias gSa='git submodule add'
+  alias gSf='git submodule foreach'
+  alias gSi='git submodule init'
+  alias gSI='git submodule update --init --recursive'
+  alias gSl='git submodule status'
+  alias gSm='git-submodule-move'
+  alias gSs='git submodule sync'
+  alias gSu='git submodule foreach git pull origin master'
+  alias gSx='git-submodule-remove'
+
+  # Working Copy (w)
+  alias gws='git status --ignore-submodules=${_git_status_ignore_submodules} --short'
+  alias gwS='git status --ignore-submodules=${_git_status_ignore_submodules}'
+  alias gwd='git diff --no-ext-diff'
+  alias gwD='git diff --no-ext-diff --word-diff'
+  alias gwr='git reset --soft'
+  alias gwR='git reset --hard'
+  alias gwc='git clean -n'
+  alias gwC='git clean -f'
+  alias gwx='git rm -r'
+  alias gwX='git rm -rf'
+fi
diff --git a/modules/git/functions/git-hub-shorten-url b/modules/git/functions/git-hub-shorten-url
index 77e4b0ba..d37b04eb 100644
--- a/modules/git/functions/git-hub-shorten-url
+++ b/modules/git/functions/git-hub-shorten-url
@@ -16,7 +16,7 @@ if [[ -z "$url" ]]; then
 fi
 
 if (( $+commands[curl] )); then
-  curl -s -i 'http://git.io' -F "url=$url" | grep 'Location:' | sed 's/Location: //'
+  curl -s -i 'http://git.io' -F "url=$url" | sed -n 's/^Location: //p'
 else
   print "$0: command not found: curl" >&2
 fi
diff --git a/modules/history-substring-search/external b/modules/history-substring-search/external
index 7a4b54b7..aae33884 160000
--- a/modules/history-substring-search/external
+++ b/modules/history-substring-search/external
@@ -1 +1 @@
-Subproject commit 7a4b54b708ab88e0421097614f1acaa7a973c795
+Subproject commit aae3388491c2312c4efb2e86bcb999927bb2900e
diff --git a/modules/history-substring-search/init.zsh b/modules/history-substring-search/init.zsh
index 67990a38..d3ee3a11 100644
--- a/modules/history-substring-search/init.zsh
+++ b/modules/history-substring-search/init.zsh
@@ -54,4 +54,6 @@ if [[ -n "$key_info" ]]; then
     bindkey -M "$keymap" "$key_info[Up]" history-substring-search-up
     bindkey -M "$keymap" "$key_info[Down]" history-substring-search-down
   done
+
+  unset keymap
 fi
diff --git a/modules/homebrew/init.zsh b/modules/homebrew/init.zsh
index 1ebe793d..1196fa57 100644
--- a/modules/homebrew/init.zsh
+++ b/modules/homebrew/init.zsh
@@ -20,7 +20,7 @@ alias brewC='brew cleanup --force'
 alias brewi='brew install'
 alias brewl='brew list'
 alias brews='brew search'
-alias brewu='brew update && brew upgrade --all'
+alias brewu='brew update && brew upgrade'
 alias brewx='brew remove'
 
 # Homebrew Cask
diff --git a/modules/node/README.md b/modules/node/README.md
index 5f0c3caf..66e9784d 100644
--- a/modules/node/README.md
+++ b/modules/node/README.md
@@ -10,6 +10,13 @@ nvm
 [nvm][5] allows for managing multiple, isolated Node.js installations in the
 home directory.
 
+nodenv
+------
+
+[nodenv][6] does one thing well. nodenv is concerned solely with switching
+Node versions. It's simple and predictable, Just Works, and is rock solid in
+production. nodenv is forked from the popular [rbenv][7].
+
 Functions
 ---------
 
@@ -43,3 +50,5 @@ Authors
 [3]: http://nodejs.org/api
 [4]: https://github.com/sorin-ionescu/prezto/issues
 [5]: https://github.com/creationix/nvm
+[6]: https://github.com/nodenv/nodenv
+[7]: https://github.com/sstephenson/rbenv
diff --git a/modules/node/functions/node-info b/modules/node/functions/node-info
index 7742f904..e4cd52d0 100644
--- a/modules/node/functions/node-info
+++ b/modules/node/functions/node-info
@@ -15,6 +15,8 @@ typeset -gA node_info
 
 if (( $+functions[nvm_version] )); then
   version="${$(nvm_version)#v}"
+elif (( $+commands[nodenv] )); then
+  version="${${$(nodenv version)#v}[(w)0]}"
 fi
 
 if [[ "$version" != (none|) ]]; then
diff --git a/modules/node/init.zsh b/modules/node/init.zsh
index 6d600789..2eb297c1 100644
--- a/modules/node/init.zsh
+++ b/modules/node/init.zsh
@@ -14,6 +14,14 @@ if [[ -s "$HOME/.nvm/nvm.sh" ]]; then
 elif (( $+commands[brew] )) && [[ -d "$(brew --prefix nvm 2>/dev/null)" ]]; then
   source $(brew --prefix nvm)/nvm.sh
 
+# Load manually installed nodenv into the shell session.
+elif [[ -s "$HOME/.nodenv/bin/nodenv" ]]; then
+  eval "$($HOME/.nodenv/bin/nodenv init -)"
+
+# Load package manager installed nodenv into the shell session.
+elif (( $+commands[brew] )) && [[ -d "$(brew --prefix nodenv 2>/dev/null)" ]]; then
+  eval "$($(brew --prefix nodenv)/bin/nodenv init -)"
+
 # Return if requirements are not found.
 elif (( ! $+commands[node] )); then
   return 1
diff --git a/modules/prompt/external/agnoster b/modules/prompt/external/agnoster
index 43cb371f..f8ffdbfb 160000
--- a/modules/prompt/external/agnoster
+++ b/modules/prompt/external/agnoster
@@ -1 +1 @@
-Subproject commit 43cb371f361eecf62e9dac7afc73a1c16edf89c7
+Subproject commit f8ffdbfbe2c2d8cd1350eae1b68367802fe6df26
diff --git a/modules/prompt/external/powerline b/modules/prompt/external/powerline
index 8e811523..c48e4c69 160000
--- a/modules/prompt/external/powerline
+++ b/modules/prompt/external/powerline
@@ -1 +1 @@
-Subproject commit 8e81152340c4beb2d941340d1feb2dc29bbcc309
+Subproject commit c48e4c69ef5c368ea7cda961ed9d0e298a5ae1fc
diff --git a/modules/prompt/external/pure b/modules/prompt/external/pure
index fb4c37da..04fa7495 160000
--- a/modules/prompt/external/pure
+++ b/modules/prompt/external/pure
@@ -1 +1 @@
-Subproject commit fb4c37dad3c5cbdebca61a8ff5545397c11d450f
+Subproject commit 04fa7495cf8fe3aff8ce286d4517df15066b820a
diff --git a/modules/prompt/functions/prompt_paradox_setup b/modules/prompt/functions/prompt_paradox_setup
index 36ae40ec..7e9b9493 100644
--- a/modules/prompt/functions/prompt_paradox_setup
+++ b/modules/prompt/functions/prompt_paradox_setup
@@ -52,6 +52,10 @@ function prompt_paradox_build_prompt {
     prompt_paradox_start_segment green black '${(e)git_info[ref]}${(e)git_info[status]}'
   fi
 
+  if [[ -n "$python_info" ]]; then
+    prompt_paradox_start_segment white black '${(e)python_info[virtualenv]}'
+  fi
+
   prompt_paradox_end_segment
 }
 
@@ -103,6 +107,7 @@ function prompt_paradox_precmd {
 
 function prompt_paradox_preexec {
   _prompt_paradox_start_time="$SECONDS"
+  python-info
 }
 
 function prompt_paradox_setup {
@@ -143,6 +148,9 @@ function prompt_paradox_setup {
     'ref' '$(coalesce "%b" "%p" "%c")' \
     'status' '%s%D%A%B%S%a%d%m%r%U%u'
 
+  # %v - virtualenv name.
+  zstyle ':prezto:module:python:info:virtualenv' format 'virtualenv:%v'
+
   # Define prompts.
   PROMPT='
 ${(e)$(prompt_paradox_build_prompt)}
diff --git a/modules/python/init.zsh b/modules/python/init.zsh
index da78ea79..458253b2 100644
--- a/modules/python/init.zsh
+++ b/modules/python/init.zsh
@@ -34,10 +34,11 @@ if (( ! $+commands[python] && ! $+commands[pyenv] )); then
   return 1
 fi
 
-# Load virtualenvwrapper into the shell session.
-if (( $+commands[virtualenvwrapper.sh] )); then
+# Load virtualenvwrapper into the shell session, unless requested not to
+zstyle -t ':prezto:module:python' skip-virtualenvwrapper-init
+if (( $? && $+commands[virtualenvwrapper.sh] )); then
   # Set the directory where virtual environments are stored.
-  export WORKON_HOME="$HOME/.virtualenvs"
+  export WORKON_HOME="${WORKON_HOME:-$HOME/.virtualenvs}"
 
   # Disable the virtualenv prompt.
   VIRTUAL_ENV_DISABLE_PROMPT=1
diff --git a/modules/syntax-highlighting/external b/modules/syntax-highlighting/external
index 7044c198..15d45875 160000
--- a/modules/syntax-highlighting/external
+++ b/modules/syntax-highlighting/external
@@ -1 +1 @@
-Subproject commit 7044c1986e2f6b15eec27a03651207fccb0a2fbe
+Subproject commit 15d4587514a3beaa13972093e335bf685b6726a9
diff --git a/modules/terminal/README.md b/modules/terminal/README.md
index 58f81be1..5a607880 100644
--- a/modules/terminal/README.md
+++ b/modules/terminal/README.md
@@ -13,14 +13,19 @@ directory, add the following to *zpreztorc*:
 
     zstyle ':prezto:module:terminal' auto-title 'yes'
 
-Auto titling is disabled inside terminal multiplexers, except inside dvtm, since
-it interferes with window names defined in configuration files and profile
-managers.
+Auto titling is disabled inside terminal multiplexers (except inside dvtm)
+since it interferes with window names defined in configuration files and
+profile managers. This can be overridden by setting it to `always`.
+
+    zstyle ':prezto:module:terminal' auto-title 'always'
+
+### Title formats
 
 To format terminal window and tab titles, add the following to *zpreztorc*:
 
     zstyle ':prezto:module:terminal:window-title' format '%n@%m: %s'
     zstyle ':prezto:module:terminal:tab-title' format '%m: %s'
+    zstyle ':prezto:module:terminal:multiplexer-title' format '%s'
 
 `%s` will be replaced with the current working directory path or the currently
 executing program name.
@@ -31,7 +36,8 @@ Functions
 ---------
 
 - `set-tab-title` sets the terminal tab title.
-- `set-window-title` sets the terminal or terminal multiplexer window title.
+- `set-window-title` sets the terminal window title.
+- `set-multiplexer-title` sets the terminal multiplexer title.
 
 Authors
 -------
@@ -39,6 +45,7 @@ Authors
 *The authors of this module should be contacted via the [issue tracker][2].*
 
   - [Sorin Ionescu](https://github.com/sorin-ionescu)
+  - [Olaf Conradi](https://github.com/oohlaf)
 
 [1]: http://zsh.sourceforge.net/Doc/Release/Prompt-Expansion.html#Expansion-of-Prompt-Sequences
 [2]: https://github.com/sorin-ionescu/prezto/issues
diff --git a/modules/terminal/init.zsh b/modules/terminal/init.zsh
index b0be5023..c7b22b7a 100644
--- a/modules/terminal/init.zsh
+++ b/modules/terminal/init.zsh
@@ -3,6 +3,7 @@
 #
 # Authors:
 #   Sorin Ionescu <sorin.ionescu@gmail.com>
+#   Olaf Conradi <olaf@conradi.org>
 #
 
 # Return if requirements are not found.
@@ -10,19 +11,12 @@ if [[ "$TERM" == (dumb|linux|*bsd*|eterm*) ]]; then
   return 1
 fi
 
-# Sets the terminal or terminal multiplexer window title.
+# Sets the terminal window title.
 function set-window-title {
   local title_format{,ted}
   zstyle -s ':prezto:module:terminal:window-title' format 'title_format' || title_format="%s"
   zformat -f title_formatted "$title_format" "s:$argv"
-
-  if [[ "$TERM" == screen* ]]; then
-    title_format="\ek%s\e\\"
-  else
-    title_format="\e]2;%s\a"
-  fi
-
-  printf "$title_format" "${(V%)title_formatted}"
+  printf '\e]2;%s\a' "${(V%)title_formatted}"
 }
 
 # Sets the terminal tab title.
@@ -30,8 +24,15 @@ function set-tab-title {
   local title_format{,ted}
   zstyle -s ':prezto:module:terminal:tab-title' format 'title_format' || title_format="%s"
   zformat -f title_formatted "$title_format" "s:$argv"
+  printf '\e]1;%s\a' "${(V%)title_formatted}"
+}
 
-  printf "\e]1;%s\a" ${(V%)title_formatted}
+# Sets the terminal multiplexer tab title.
+function set-multiplexer-title {
+  local title_format{,ted}
+  zstyle -s ':prezto:module:terminal:multiplexer-title' format 'title_format' || title_format="%s"
+  zformat -f title_formatted "$title_format" "s:$argv"
+  printf '\ek%s\e\\' "${(V%)title_formatted}"
 }
 
 # Sets the tab and window titles with a given command.
@@ -59,8 +60,11 @@ function _terminal-set-titles-with-command {
     local truncated_cmd="${cmd/(#m)?(#c15,)/${MATCH[1,12]}...}"
     unset MATCH
 
-    set-window-title "$cmd"
+    if [[ "$TERM" == screen* ]]; then
+      set-multiplexer-title "$truncated_cmd"
+    fi
     set-tab-title "$truncated_cmd"
+    set-window-title "$cmd"
   fi
 }
 
@@ -74,8 +78,11 @@ function _terminal-set-titles-with-path {
   local truncated_path="${abbreviated_path/(#m)?(#c15,)/...${MATCH[-12,-1]}}"
   unset MATCH
 
-  set-window-title "$abbreviated_path"
+  if [[ "$TERM" == screen* ]]; then
+    set-multiplexer-title "$truncated_path"
+  fi
   set-tab-title "$truncated_path"
+  set-window-title "$abbreviated_path"
 }
 
 # Do not override precmd/preexec; append to the hook array.
@@ -110,12 +117,13 @@ then
 fi
 
 # Set up non-Apple terminals.
-if zstyle -t ':prezto:module:terminal' auto-title \
-  && ( ! [[ -n "$STY" || -n "$TMUX" ]] )
+if zstyle -t ':prezto:module:terminal' auto-title 'always' \
+  || (zstyle -t ':prezto:module:terminal' auto-title \
+    && ( ! [[ -n "$STY" || -n "$TMUX" ]] ))
 then
-  # Sets the tab and window titles before the prompt is displayed.
+  # Sets titles before the prompt is displayed.
   add-zsh-hook precmd _terminal-set-titles-with-path
 
-  # Sets the tab and window titles before command execution.
+  # Sets titles before command execution.
   add-zsh-hook preexec _terminal-set-titles-with-command
 fi
diff --git a/modules/utility/README.md b/modules/utility/README.md
index 5e7919ea..16b4317c 100644
--- a/modules/utility/README.md
+++ b/modules/utility/README.md
@@ -75,6 +75,7 @@ Aliases
   - `pu` changes the directory and pushes the old directory onto the stack
     (`pushd`).
   - `rm` removes files and directories interactively.
+  - `sa` search aliases for a word.
   - `type` displays all the attribute values of a shell parameter.
 
 ### Files and Directories
diff --git a/modules/utility/functions/diff b/modules/utility/functions/diff
index 8347899e..d5dd360b 100644
--- a/modules/utility/functions/diff
+++ b/modules/utility/functions/diff
@@ -8,7 +8,7 @@
 function diff {
   if zstyle -t ':prezto:module:utility:diff' color; then
     if (( $+commands[colordiff] )); then
-      command diff --unified "$@" | colordiff --difftype diffu
+      command colordiff --unified "$@"
     elif (( $+commands[git] )); then
       git --no-pager diff --color=auto --no-ext-diff --no-index "$@"
     else
diff --git a/modules/utility/init.zsh b/modules/utility/init.zsh
index c401af84..cd373939 100644
--- a/modules/utility/init.zsh
+++ b/modules/utility/init.zsh
@@ -57,6 +57,7 @@ alias p='${(z)PAGER}'
 alias po='popd'
 alias pu='pushd'
 # alias rm="${aliases[rm]:-rm} -i"
+alias sa='alias | grep -i'
 alias type='type -a'
 
 # ls
@@ -158,7 +159,11 @@ fi
 # Miscellaneous
 
 # Serves a directory via HTTP.
-alias http-serve='python -m SimpleHTTPServer'
+if (( $+commands[python3] )); then
+  alias http-serve='python3 -m http.server'
+else
+  alias http-serve='python -m SimpleHTTPServer'
+fi
 
 #
 # Functions
diff --git a/runcoms/zpreztorc b/runcoms/zpreztorc
index a82df475..109f2294 100644
--- a/runcoms/zpreztorc
+++ b/runcoms/zpreztorc
@@ -153,6 +153,9 @@ zstyle ':prezto:module:prompt' theme 'sorin'
 # Set the tab title format.
 # zstyle ':prezto:module:terminal:tab-title' format '%m: %s'
 
+# Set the terminal multiplexer title format.
+# zstyle ':prezto:module:terminal:multiplexer-title' format '%s'
+
 #
 # Tmux
 #
diff --git a/runcoms/zprofile b/runcoms/zprofile
index 9341d647..66e955ae 100644
--- a/runcoms/zprofile
+++ b/runcoms/zprofile
@@ -67,8 +67,7 @@ fi
 #
 
 if [[ ! -d "$TMPDIR" ]]; then
-  export TMPDIR="/tmp/$LOGNAME"
-  mkdir -p -m 700 "$TMPDIR"
+  export TMPDIR="$(mktemp -d)"
 fi
 
 TMPPREFIX="${TMPDIR%/}/zsh"