[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>
Add giddie theme
Add skwp theme
Add kylewest theme
Add DaMoeKri theme

Signed-off-by: Sorin Ionescu <sorin.ionescu@gmail.com>
Indicate SSH connections
Update giddie theme

Signed-off-by: Sorin Ionescu <sorin.ionescu@gmail.com>
Add smiley theme

Signed-off-by: Sorin Ionescu <sorin.ionescu@gmail.com>
Add ruby-info to smiley theme
Update zprezto submodules
Merge commit '2d23cc45ec408748a7e2037626695ac1e5dc798c' into develop