Completed circ-circ intersection impl
Impl obj callbacks, test for presense objects, test framework
Impl circle equality, new tests, fixes
Added instructions
Snap points under control
Implemented circle center snap point
Refactoring. Fixed center snap pt
Fixed circle center snap pt priority
Snapping as checkboxes
Refact proirities for snap algs
impl simple point ids
Visual refresh
Massive refactoring to support multiple renderers
Visual refreshment
Fixed local caching to support multiple view renderers
Fixed local cache to support multiple view renderers
Started implementing V-view. 3d point
Redoing coordinate systems work
Implemented axis
Fixed axis, ortho