Color lambda symbol in prompt
tmux - Turn on automatic rename setting
zsh - Add gbv alias, use direnv if available
Vim settings modifications

- Re-enable YouCompleteMe
- Add menuone setting for completions
- Do not use the powerline sep chars in airline when outside of the gui,
  because of issues with semi-transparent terminals
Updated prompt with yellow/red git branches for indexed/unindexed changes
Added slog alias
Default vim to using 4 spaces per tab expanded
Use the new tmux reattach copies
Zsh - use-mongo alias, UP and DOWN searching of history