-added moving walls, they will start to move after the player crosses the start line
-added fixed turret enemy, looks the same as moving turret(sounds different) but placed/fixed near rocks and aggressively shoots at player if triggered(trigger sound and aim spotlight turns on) - none placed on levels 1&2, 2 placed on levels 3-6, 4 placed on levels 7+
-made the hit boxes bigger for crystals and ships, so easier to hit using crystal shot
-made missiles fired occasionally from overhead ships explode closer to player(if clear line of sight)
-added 5 background planets - credit - DUAEL DESIGNS LLC & ROBERT STEIN III '10 - http://freebitmaps.blogspot.com
-added night skybox - credit - NoLogoGames - https://opengameart.org/content/space-nebulas-skybox
feedback welcome!