==================
* Added support for Jinja2-rendered templates to define the initial
pull-request title/body used by the ``pr`` command.
* Update the Harvest API to make use of the ``external_ref`` argument instead
of simulating a browsing session. This trims down on the number of requests
needed to start a timer and improves performance.
* Added a ``checkout`` command to easily checkout an existing branch based
solely on the issue ID.
* All commands are now dynamically loaded. Additional commands can be defined
in the settings (this also supports custom external commands).
* The Harvest project is now retrieved from the supertask if none can be
defined by looking at the subtask.
* Get the github login token from the keychain in a more robust way.