• Add YAML 1.1 tags: !!binary, !!omap, !!pairs, !!set, !!timestamp (#9)

• Add !bigint (#4)

• Add unique and public symbols: !symbol & !symbol/shared (#1)
• Add !class, !function, !error and !nullobject from tap-yaml (#3)
• Require at least yaml 2.3.0

First release, including only !re