Move edge interpolation / tension to the drawEdge function
Draw functions now handle all objects instead of individual objects
Change version to v0.1.0-pre
Initial work on transitions

Still need a way to set transition duration, delay, ease, etc.
Add support for configurable transitions
Properly bind the this pointer for functions given to the Renderer
Hacky fix to transition glitch when adding control point
Fix edge interpolation / tension configuration
Comment out linear edge interpolation in interactive-demo
Disable transitions by default
Fix README w.r.t. edgeInterpolate and edgeTension
Prep v0.1.0 release