New Build 0.1.107 - Two new maps, one new enemy and more

Version 0.1.107

• New map Arcadia - Mission 04 - heavy use of bridges
• New map Arcadia - Mission 05 - Large grid area, this completes the mission list for Arcadia
• New enemy unit Laser Sword Infantry - small and quick with a modest attack, high health for it's size
• Bridge placement is now only possible in fixed locations on the grid
• Bridge placement now shows an indicator where the bridge goes and what direction it will face