Features

UI:

-Blur effect on main menu screen
-Better-looking buttons
-Better site experience: No load time within the game
-Small changes to text and fonts
-One or two colour changes

Physics:

-Completely overhauled physics system
-ADVANCED COLLISION!
-Objects no longer fall through the ground at all
-Objects can fall on top of each other, and they stack
-IMPROVED GRAVITY:
-Multiple objects can fall at once (finally!)
-You can now change the gravitational strength in your world
-10 is somewhat earth-like

And of course, a bunch of fixes! Enjoy!