Add more git aliases, and reformat some of the file for easier reading

Aliases that were added:
   - gs: git status
   - gsts, gstp, gstl, gstll: git stash
   - gf: git fetch
   - gd, gdd: git diff
   - gm: git merge
   - gh, ghh, ghhh, ghhhh: git history (pretty)

plugins/git/git.plugin.zsh

@@ -1,32 +1,42 @@
 # Aliases
-alias g='git'
-compdef g=git
-alias gst='git status'
-compdef _git gst=git-status
-alias gl='git pull'
-compdef _git gl=git-pull
-alias gup='git fetch && git rebase'
-compdef _git gup=git-fetch
-alias gp='git push'
-compdef _git gp=git-push
-gdv() { git-diff -w "$@" | view - }
-compdef _git gdv=git-diff
-alias gc='git commit -v'
-compdef _git gc=git-commit
-alias gca='git commit -v -a'
-compdef _git gca=git-commit
-alias gco='git checkout'
-compdef _git gco=git-checkout
-alias gb='git branch'
-compdef _git gb=git-branch
-alias gba='git branch -a'
-compdef _git gba=git-branch
-alias gcount='git shortlog -sn'
-compdef gcount=git
-alias gcp='git cherry-pick'
-compdef _git gcp=git-cherry-pick
-alias glg='git log --stat --max-count=5'
-compdef _git glg=git-log
+alias g='git'                           ; compdef g=git
+alias ga='git add'                      ; compdef _git ga=git-add
+alias gaa='git add --all'               ; compdef _git gaa=git-add
+alias gs='git status'                   ; compdef _git gs=git-status
+alias gst='git status'                  ; compdef _git gst=git-status
+# for `gsts "<message>"`
+alias gsts='git stash save'             ; compdef _git gsts=git-stash
+alias gstp='git stash pop'              ; compdef _git gstp=git-stash
+alias gstl='git stash list'             ; compdef _git gstl=git-stash
+alias gstll='git stash show -p --stat'  ; compdef _git gstll=git-stash
+alias gl='git pull'                     ; compdef _git gl=git-pull
+alias gup='git fetch && git rebase'     ; compdef _git gup=git-fetch
+alias gf='git fetch'                    ; compdef _git gf=git-fetch
+alias gp='git push'                     ; compdef _git gp=git-push
+alias gd='git diff --no-ext-diff -b'    ; compdef _git gd=git-diff
+alias gdd='git diff --no-ext-diff'      ; compdef _git gdd=git-diff
+gdv() { git-diff -w "$@" | view - }     ; compdef _git gdv=git-diff
+alias gc='git commit -v'                ; compdef _git gc=git-commit
+alias gca='git commit -v -a'            ; compdef _git gca=git-commit
+alias gco='git checkout'                ; compdef _git gco=git-checkout
+alias gb='git branch'                   ; compdef _git gb=git-branch
+alias gba='git branch -a'               ; compdef _git gba=git-branch
+alias gcount='git shortlog -sn'         ; compdef gcount=git
+alias gcp='git cherry-pick'             ; compdef _git gcp=git-cherry-pick
+alias gm='git merge'                    ; compdef _git gm=git-merge
+alias glg='git log --stat --max-count=5'; compdef _git glg=git-log
+
+# Git history (pretty)
+local pretty_format_oneline='--pretty=format:"%C(yellow)%h %C(green)%cd %C(cyan)%an %C(bold cyan)%d%C(reset) %s" --date=short'
+local pretty_format_medium='--pretty=format:"%C(yellow)commit %H %C(bold cyan)%d%C(reset)
+%C(cyan)Author: %an <%ae>%C(reset)
+%C(green)Date: %cd%C(reset)
+%+s
+%+b"'
+alias gh="git log --graph $pretty_format_oneline"                        ; compdef _git gh=git-log
+alias ghh="git log --graph $pretty_format_medium"                        ; compdef _git gh=git-log
+alias ghhh="git log --graph --stat $pretty_format_medium"                ; compdef _git gh=git-log
+alias ghhhh="git log --graph --stat -p --full-diff $pretty_format_medium"; compdef _git gh=git-log
 
 # Git and svn mix
 alias git-svn-dcommit-push='git svn dcommit && git push github master:svntrunk'