* Initial implementation of ColorBarItem
* initial commit
* fixed missing indent
* docstring extension and corrections
* Converted example to match others / run as part of tests
* load local color maps instead of importing from colorcet
* clean up window creation code
* horizontal color bar and clean-up
* switched to mkQApp initialization
* cleaned up some comments
* extend ColorMap functionality for palette management
* manual merge with changes in master branch
* extend ColorMap functionality for palette management
* manual merge with changes in master branch
* light mode / dark mode swapping demo
* color map updates
* added ColorCET and Matplotlib import for color maps
* minor cleanup
* restored lost indent
* Code cleanup
* Add colorcet as optional dependency
Co-authored-by: Ogi Moore <ognyan.moore@gmail.com>