Name : san yuen chang, 
id : 
user name : z5f4

there is extra functionality of making all cubes as wire frames.
extra credits attempted are : eyes, coloring.
and animation during rearing that tail remains vertical, and neck remains vertical
relative to the ground.

Also dynamic motions are all independent and toggle independently as
required and specified in the assignment. In particular that 'r' is used to reset
everything to initial configuration, and 'R' is used for REARING.