Remove heroku from the bundler plugin

Enhancements for the Debian Plugin

Make the $apt_pref variable evaluatet at alias expansion by using single-quotes instad of double quotes

The heroku command should not be executed via bundler, see:
https://github.com/heroku/heroku/issues/173 

Python plugin: added pygrep command, simplified pyclean

added aliases for sublime text

Fix the svn plugin only outputting the 1st path segment

Fix $ZSH_CUSTOM variable

This seems like a simple oversight, everything else uses `$ZSH_CUSTOM`
rather than `$ZSH/custom`.

The addition of `(.N)` enables the `NULL_GLOB` option which suppresses
the error output in question.

Reference: http://www.zsh.org/mla/users/2004/msg00621.html

^/branches/featurename
^/releases/Release-vx.y
^/trunk

URGENT: Fix for bug introduced in pull request 925

added rails to bundled_commands

Bugfix/gitversionfix

add rails runner alias

- avoid rr as it is mostly used for restart rails server

Replace "git-diff" with "git diff" in the git plugin

take in chris sexton's changes to the pow plugin

adding rbenv support to all the rvm themes

Adding Engine Yard command (ey) to bundler binstubs

Fix bundler plugin for root level folders

github plugin: only alias git=hub if `hub --version` works.

autojump plugin enhanced

remove the -v flag from a few mercurial aliases

Updated to the latest taskwarrior completion definition (2.0b4)

Git Plugin: add 'grhh' alias for 'git reset HEAD --hard'

Grammar update