change 2

Credit to Clearasil for more testing 'n feedback!

increased wall buffer duration for walljumping just after leaving wall
changed tutorial signs behavior - the text now stays visible while you're near the sign, and only starts to disappear after you've left it.
tweaked tutorial level end door position
countered dash direction bug

fixed a bug with slope-sliding display

made 3 levels (first attempts)
made checkpoint detection box slimmer
zoomed out
improved "coyote time" by extending floor detect area

implemented saving and loading of scores

Todo:
change sign text size to match new zoom level
level select menu