Some work on GitPython integration.
More cleanup.
Commit some temp code.
Add some new arguments.
More work on GitPython integration.
More stuff.
More work on rebasing/merging.
More work on some pending issues.
Flesh out error handling for merge/rebase.
Proper up-to-date-check; fix when branches are empty.
Mostly finish new remote fetching.
Remove mostly useless verbose option; clean up output.
Refactor out _update_branches(); remove COUNTING from fetch progress.
Colorize and merge branch update lines into one.
Handle some GitPython exceptions.
Some fixes; go back to one-line-per-branch system.
Update README; --preserve-merges as promised.
Merge branch 'feature/gitpython' into develop
release/0.2