0.590   2018-09-26 (PERLANCAR)

	- Add functions: rgb_distance, rgb_is_dark, rgb_is_light.

	- [refactor] Factor out the regex pattern to a variable, it's
	  slower but cleaner.

	- [doc] Format POD headings so they can be easily referred to.


0.58    2015-01-03 (PERLANCAR)

	- No functional changes.

	- Rebuild (Generate TODO.md).


0.57    2014-12-05 (PERLANCAR)

        - Rename module/dist from SHARYANTO-Color-Util to Color-RGB-Util.


0.56    2013-09-10 (SHARYANTO)

        - No functional changes. Split from SHARYANTO-Utils to minimize
          dependencies (I'm trying to make Text::ANSITable work under Windows).