add submodule for github.com/Tarrasch/zsh-functional

.gitmodules

@@ -7,3 +7,6 @@
 [submodule "modules/completion/external"]
 	path = modules/completion/external
 	url = https://github.com/zsh-users/zsh-completions.git
+[submodule "modules/functional/external"]
+	path = modules/functional/external
+	url = git://github.com/Tarrasch/zsh-functional.git

modules/functional/README.md

@@ -0,0 +1,22 @@
+Syntax Highlighting
+===================
+
+Integrates [zsh-functional][1] into Prezto.
+
+Contributors
+------------
+
+New features and bug fixes should be submitted to the
+[zsh-functional][1] project according to its rules and regulations.
+This module will be synchronized against it.
+
+Authors
+-------
+
+*The authors of this module should be contacted via the [issue tracker][3].*
+
+  - [Sorin Ionescu](https://github.com/sorin-ionescu)
+
+[1]: https://github.com/zsh-users/zsh-syntax-highlighting
+[3]: https://github.com/sorin-ionescu/prezto/issues
+

modules/functional/external

@@ -0,0 +1 @@
+Subproject commit 0dffe1c33a24a8a49196cf0892eec8fc49c5b15d

modules/functional/init.zsh

@@ -0,0 +1,9 @@
+#
+# adds functinal programming capabilities.
+#
+# Authors:
+#   Sorin Ionescu <sorin.ionescu@gmail.com>
+#   Tobias Mayer  <tobim@fastmail.fm>
+#
+
+source "${0:h}/external/functional.plugin.zsh"