[Fix #543] Do not set tmux destroy-unattached

Signed-off-by: Sorin Ionescu <sorin.ionescu@gmail.com>
Fix git-info added/deleted count formatting typo

Signed-off-by: Sorin Ionescu <sorin.ionescu@gmail.com>
Create a default tmux session only when none defined in tmux.conf

Signed-off-by: Sorin Ionescu <sorin.ionescu@gmail.com>
Support $PYTHONUSERBASE per PEP 370

Signed-off-by: Sorin Ionescu <sorin.ionescu@gmail.com>
Remove some unused crap in runcoms
Enable syntax-highlighting
Add some paths to the path in zshenv
Drop some old aliases and ruby GC settings
Merge remote-tracking branch 'upstream/master'
Update zprofile/zshenv to match upstream and fix order of PATH