Log Message:
devel/ruby-tty-color: update to 0.6.0

pkgsrc change: update HOMEPAGE to https://ttytoolkit.org/.

## [v0.6.0] - 2020-11-07

### Added
* Add 24bit color aka "direct color" aka "truecolor" by @nevans
* Add support for NO_COLOR env var by @nevans

### Changed
* Change to freeze all regular expressions
* Change to increase test coverage to 100%