Mainframe Defenders Demo 0.505 Patch

Small Mainframe Defenders Demo update includes following changes:

• FIX: Weapons and items can be used out of range.
• FIX: Weapons not correctly refunding use cost in rare case.
• FIX: Game-breaking bug if unit dies while firing Razor.
• FIX: Items incorrectly shown as usable in some cases.
• FIX: Game can be continued after first defeat.
• QOL: Attempt to shoot empty tiles and allied units will result  in cancelling attack (AOE weapons are exception to this)