Revise git statuses.
Use statuses class for all status-related methods.
Add object/string methods for each status type.
Merge pull request #10 from Impromptu/statuses

Improve git status structure and methods
Version 0.1.2.
Update Summon to 0.2.0
Merge pull request #12 from Impromptu/summon-0.2.0

Update Summon to 0.2.0
Use bit-based git status flags.
Merge pull request #13 from Impromptu/status-codes

Use bit-based git status flags.
Register git as an impromptu repository.
Add a fetch command.
Remove underscore, it's no longer used
Merge pull request #14 from Impromptu/remove-underscore

Remove underscore, it's no longer used
Don't create a repo object until one is needed

This makes it easier to load repos in of processes that are already async (creating sections) instead of processes that are blocking (requiring modules)

Some basic testing suggests this improves prompt generation time *very* slightly
Merge pull request #15 from Impromptu/delay-loading-git-repo

Don't create a repo object until one is needed
Version 0.1.3. Add impromptu peer dependency.
Merge pull request #16 from Impromptu/git-fetch

Add impromptu as a git repository and add git fetch.
Version 0.1.4.
Remove git utils dependency
Remove references to repo objects from git-utils