Alternate ramp behavior, a lot more

Log changed, Invincible changed to be consistent with rest of power-ups,
code reformatted: objMove() now is the method to call in ALL objects
when you want to move. Changed respawnBlink() to be based on sine, so
it's smoother. Commented out all code that creates Snow. Changed jump
from 46 frames to 50 frames per Jeffrey's playtest feedback. Objects
should stop overlapping onscreen. Probably more stuff too.