v0.2.1

Cleaned some code up a tiny bit

v0.2.0

• Changed the sidescroller controller to be a state machine

• Sort of fixed it getting stuck on sloped ceilings

v0.1.0

• A base Controller2D class, which utilizes Rigidbody2D.Slide() for movement
• A sidescroller controller with some basic features:
  • Movement and acceleration
  • Intuitive jump configuration
  • Coyote time and jump buffering
  • (Optionally) variable jump height
• A simple topdown controller