Better readability of colors

Fix import problems

Version 3.1.0

Version 3.0.10

github_changelog_generator --future-release v3.0.10

Merge pull request k0kubun#63 from k0kubun/dependabot/go_modules/gith…

…ub.com/mattn/go-colorable-0.1.12

Bump github.com/mattn/go-colorable from 0.1.7 to 0.1.12

Merge pull request k0kubun#62 from Juneezee/go1.17

build: upgrade `go` directive in `go.mod` to 1.17

Merge pull request k0kubun#46 from k0kubun/drop-maprange

Resurrect Go 1.11 support

Merge pull request k0kubun#45 from k0kubun/sorted-map

Sort keys of maps

Link something more helpful

Remove wercker config in favor of GitHub Actions