Add git 'sfs' command to show stats
Add SBT jacoco4sbt plugin
Fix bug in SBT config

Remove property that forks by default. This may cause problems in some
cases for certain applications, and this property should not be forced
in the global build configuration.
Make git merge default to upstream branch
Add gist-vim plugin
Make vim highlight certain special characters
Update email address
Update gitconfig to show line numbers for grep
Upgrade submodules to latest versions
Upgrade submodules to latest versions
Update README
Fix output of git 'credit'

Make tab characters render properly on newer versions of git.
Add clean functionality to installer
Add vim command to write to read-only files
Remove Mac-specific configuration
Update README and LICENSE
Remove ruby related configuration
Improve zsh vim style line editing
Fix bug in zsh prompt

Prevent issues that may arise from RPR_SHOW_USER or RPR_SHOW_HOST being
set to unexpected values by testing variables properly.
Rename git 'expand' alias to 'explain'