v2.2: Merge pull request #2 from kip-hart/dev

Change Log

AABB Class

• Added volume property
• Added overlap volume class method

AABBTree Class

• Added depth property
• Updated cost functions in add method

Miscellaneous

• Updated version to 2.2
• Removed cost-dependent AABBTree tests

v2.1

Change Log:

• Added a catch for comparing AABB overlap when one of them is uninitialized

v2.0.1

Change Log:

• Attempted to improve docs PDF

v2.0

Change Log:

• Renamed import module from "aabb" to "aabbtree" for consistency with the PyPI install command
• Updated documentation, included an image of an AABB tree

v1.2.2

updated version to 1.2.2

v1.2.1

updated versions to 1.2.1

v1.1

bumped version since 1.0 already used

v1.0

updated to version 1.0

Initial Release

v0.0-alpha

updated version numbers