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If it is not found an error message is printed.

This may be needed on systems that don't have the proper terminfo for
screen and/or screen-256color. Otherwise the defaults of screen and
screen-256color should be fine.

Fixes gem versions with words (beta, pre) in the version or with
multiple installed versions not being highlighted, and compatibility
with GNU sed (related to robbyrussell/oh-my-zsh#1579).

It migrates the DB and prepares the test DB.

#1445 is great, if you use node.  For those that don't this should mean we can find a reasonable fallback.
Users can force urltools to use a specific system by setting `URLTOOLS_METHOD` to one of:
* `node`
* `python`
* `ruby`
* `php`
* `perl`

Note that you can't (currently) choose which `perl` sublibrary to use, it will use either `URI::Encode`, `URI::Escape`, or regular expressions in that order of preference.

Adds support for Rapid Board without breaking backwards compatibility (like #1378)
Allows JIRA url to be set in .zshrc, current directory, and/or home directory.

Using lazy loading for virtualenvwrapper gives a mariginal speed
improvement and doesn't stop workon_cd from working. It has the
undesired effect of forcing you to call certain virtualenv commands
twice before they work (only once per shell instantiation).

updated run sublime on linux with parameters 

This was copied from the git-flow plugin and necessary changes made for the additional features.

http://dev.datasift.com/blog/hubflow-github-and-gitflow-model-together

HubFlow is git flow with additional features to help with use of github.