Bullets no longer update when inactive
Added round system to enemy spawns
Merge branch 'feature-terry' into dev
Clamped enemy speed after random influence added
Enemy fragments now decrease in size
Added refined placeholder art
Added constant rotation speed applied every frame
Fixed a typo pertaining to bullet rotation speed
Fixed teleport, polished scoring & wraparound
merged from dev
Added stubbed out classes for loading consts from XML file
Removed non-existant Settings.cs from project
Merge branch 'dev' into feature-terry