Patch and physics adjustment

Adjusted physics to be closer to the original as best as I could, which involved making the gravity scale about double of what it previously was. It looks fast but this is the value I got from timing the drop speed in the original game. 

Fixed allowing movement and dropping after the player has already lost 

Drop speed significantly increased (Now can drop every .3 seconds)

Changed loss condition slightly: 
Newly dropped or spawned shapes have 1 second before they count toward losses. Whether a shape is considered "in" the loss zone is determined by checking if its center is just above the top line. A warning is shown if a new shape is in the loss zone, at which point you can no longer drop new shapes until either your shapes settle outside of the loss zone, or one second has passed while a new shape stayed in the loss zone which would result in a loss.