Add new command 'check' which scans the open pull requests for another user.
Add 'xdg-open' to improve Linux support.  Always print out pull request URL in case it needs to be referenced after browser is closed.
Auto-open ticket in JIRA after submitting pull request if github.jira config is set.
Have github.reviewer be a default rather than forced each time.
Prompt for remote branch name.
Raise warning if trying to send a pull request on master.
Use environment variables instead of temporary files to return to working folder.
Do not print a warning if email names functionality is not used
Do not force reviewer
If no pull request # is specified, treat 'fetch' like 'fetch-all'
Use JIRA link as default pull request body
Fix reviewer lookup not working if reviewer set to upstream
If update method is set to 'rebase', be consistent and avoid creating merge commits by doing a rebase against the update branch first
Change default update method to rebase (this isn't very git-like, but it makes more sense for Liferay workflows)