Bodies in place
Added rotation

Adjusted speed
Added difficulties

Fixed beat trimming algorithm, removed rotation, normalized note
velocity
Changed gameplay style

Player now controls a circle with an opening; beats fly out from center,
they must pass through opening
Added camera rotation

Fixed missing segment in circle generator
Added lighting

lights pulse with music
Synchronized camera spin

High energy beats reverse spin direction
Added external circle

Player is now an arc
Changed style again
Corrected sprite scaling and trimming
Corrected sprite placement

box2d coordinates translate to SpriteBatch coordinates, sprites properly
scaled, sprites are pooled, reorganized render for cleanliness