remove some additional unnecessary complication.

- Bookmarks and command/directory history functions implemented
- Function to edit commandline with $EDITOR
- Faster git parser

[bak] Fix tests

Add mercurial support for bobthefish

This reverts commit 8b94f572f170510f8fb0e2f51a657e267dc86241.

Add TODO to do this right :P

This makes it easier (possible?) to distinguish between hg and git repos at a glance.

Add local-config plugin.

Support per-user, per-host, and per-platform custom configuration files.

Stops theme breaking in root directory

new plugin:better alias

Rewrite `bundle exec` wrapper to be more robust