Build 0.9934946

-Fixed flickery issue with drop platforms
-Fixed file delete issue from create.
-Fixed scrolling background continuing in other levels.
-Fixed auto scroll.. scroll starts as soon as player 1st moves.
-Fixed multiple bubble/jetpack issue (you can not pickup bubble if you already have 1)
=Fixed bubble/jetpack respawn checkpoint issue (it was possible to mess things up if you entered checkpoint after bubble had respawned while still in a bubble)
-Fixed bouncing enemy speed issues.
-Fixed cannon gravflip issues.
-Fixed issues with editor zooming in out when using mouse wheel to scroll items etc (I may well have missed some occurrences and I did have a strange problem with meta files undoing some of my fixes so please let me know if you still see this and where).
-More fixed level name cursor in game issues.
-Supplied Themes now in Chronological order.
-Added respawn timers to drop platforms
-Added respawn timer to crumbling platforms
-Tidied up tool-bar left click sfx.