add getArray function to RectMatrix and Vector classes
Snapshot and SnapshotManager in progress
Math library pass the unit test
except diagonalize(), all of functions in math library pass the test
more tests on math library
fix some bugs in Quaternion class
math library in progress
math library in progress
refactory vector and matrix classes
This form allows you to request diffs between any two revisions of this file. For each of the two "sides" of the diff, enter a numeric revision.