Highlight exec in gitrebase
Support "Changes not staged for commit" heading
Allow folding diffs in commit messages
Detect commit messages in submodules
Disable external diff in :DiffGitCached
Fix potential 'cpotions' issue
Fix git dir detection for submodules
Detect config in submodules
Don't set b:git_dir in submodules

It's hard to easily figure out the actual root for the submodule git
dir, so don't even try.
Remap q only for the diff buffer
Remove automatic diffing suggestion

Doesn't match the new submodule setup and hardly worth keeping around
anyways.
Set nomodeline locally
Sync with upstream
Ensure 'formatoptions' includes t

Partially addresses #10.
Improve 'formatoptions'

References #10.
Detect MERGE_MSG
Fix gitcommit detection

Closes #15.
Ensure tabstop=8 in gitcommit

The status looks weird with anything else.
Support XDG git config location
Ignore Pathogen-generated help tags.