Added some bullet patterns, enemy wave patterns were changed as part of this.
Adding main menu and credits scenes. Instructions and hiscores menus are just placeholders at the moment.
Merge branch 'master' of https://github.com/mirzael/Operation-Arcus
Merge branch 'master' of https://github.com/mirzael/Operation-Arcus
Removed some unnecessary logging
Orange gravity field now more noticable.
Merge branch 'master' into task/refactor-ship-forms