* Added pushNeedsUpdate and onPushNeedsUpdate pairing to the Renderable stack to allow the children to request updates from their parents
 * Added a parentRenderable reference to the renderable to store a reference
 * Updated setParentTransform to setParent
 * Added parentRenderable and parentTransform to the destroy method within Renderable
 * Updated RenderableGroup to call up to Renderable to destroy its children
 * Removing the dictionary, set, and region test cases
 * Added test cases for multi-level updateTransform call
 * Removed old test suites
 * Removed namespace test case due to removal of namespaces
 * Added error-threshold based equivalence check
 * Updated transform tests