Version 0.8.1182 live

Just merged version 0.8.1182 to the live build.

See in game patch notes for all the changes since the previous version (0.8.1055)

Quick recap of the main changes:

Added defense mode
Added local co-op (not in defense mode yet)
Added Linux support
Added Mac support
Added some missing perks
Added ability to enable/disable some perks
Added achievements
Bunch of minor fixes/tweaks/additions