Add several checks to prevent division by zero (triggered by converting black).
Merge pull request #37 from dwbullok/master

Add several checks to prevent division by zero (triggered by converting ...
Bumping version to 2.1.0
Update release_notes.rst
Fixed conversion from HSV -> IPT.
RGB conversion template was missing IPT target - added it.
Merge pull request #38 from dwbullok/master

Fixed conversion from HSV -> IPT.  RGB conversion template was missing IPT target - added it.
Added basic skeleton for CAM implementation, tests and docs
Added initial implementation of CIECAM02
Refactored tests and added fixtures for all CAMs
Added division from future for backwards compatibility
Changed path for fixtures from relative to absolute
Refactored every example computation into its own test method
Added RLAB
Use nose to generate tests for each attribute
Initial LLAB implementation
Initial ATD implementation
Initial Nayatani implementation
Fixed underlines in docs
Removed RLAB todo
Added initial Hunt model implementation