Add tag command with Semver release support #3
Description
Add tag command to create Git tags following The Semantic Versioning 2.0.0 and supporting the following options:
Proposal
# show all tags available
~> tag
# show all tag command flags
~> tag -h
-n --new-version [version] tag a new version
-x --major tag auto-incrementing a major version number
-y --minor tag auto-incrementing a minor version number
-y --patch tag auto-incrementing a patch version numberExamples
~> tag --new-version v1.0.0
# v1.0.0
~> tag --major
# v2.0.0
~> tag --minor
# v2.1.0
~> tag --patch
# v2.1.1