Updated minimal textures. Changed player movement: gravity is now far stronger, but the player jumps harder (making jumping faster) and removing the ability to step-up to the next block during a jump, preventing the player from flying up hills.
Played around with jumping physics: adjusted jumpspeed/gravity, added damping for horizontal movement in the ground/air (instead of easing the player to zero speed immediately, the game damps the movement based on configurable floats)