Update b.11

A mix of fixes and small feature updates in this version. Base inventories have been causing issues for a while so I completely redid them. Also new in this version is a handler for trying to update older saves to the current version - so saves from b10 SHOULD be compatible with this version, however I'd back up your save just in case (and let me know if it won't load). Also new in this version are sneak attacks, which I've had stubs for for a while but that never actually did anything - combat knives, daggers, and shanks are all capable of making backstab attacks, which can only be done when an alarm hasn't been triggered and if successful deal massive damage against unarmoured targets. If all Conservative targets are killed, then an alarm is not triggered so long as only sneak attacks were made.

• CCS locations now call CCS backup (except for the Desert Eagle Bar, which will call police)
• Fixed issue with evidence being passed to liberals by sleepers not being persisted correctly in the save file
• Reworked base inventory handling so it should eliminate issues of items duplicated in multiple base inventories, or "phantom" items being referenced in save files that cause a crash when those saves are loaded.
• Added sneak attacks