Merge pull request #43 from AlekSi/no_color

Support NO_COLOR (https://no-color.org).

Merge branch 'master' of github.com:matryer/is

Merge pull request #32 from oliverpool/patch-1

Fix handling of the IS_NO_COLOR env variable

Merge pull request #19 from Houndie/master

Update is.NewRelaxed documentation

Merge pull request #14 from matryer/add-license-1

Added new MIT license

Merge pull request #12 from mastertinner/master

Return true for two nil slices or two nil maps