Precise Movement Update
All creatures that could walk on land now have precise movement. Precise movement mode is toggled with the left-control key, then press a movement key to move in that direction.
Precise movement has been sped up to make maneuvering in combat more fun.
A lot of creatures had their movement speed adjusted based on their size.
Flying creatures had their rate at which they lose altitude adjusted so they don't lose altitude so fast.
Quetzalcoatlus and meganeura now have faster flight speed.
Squashed some bugs.