Log Message:
devel/ruby-red-colors: update to 0.2.0

0.1.3 (2021-06-10)

* Use matrix.gem for matrix inverse operation
* Fix xyz_to_rgb conversion
* Perform clamp before to_r

0.2.0 (2021-06-12)

* Add ListedColormap and LinearSegmentedColormap
* Add Colormap#to_html
* Support rational in Colormap#[]