Merge pull request #876 from lmorg/develop

version: add --semver flag

Merge pull request #849 from lmorg/develop

v6.3

Merge pull request #846 from lmorg/develop

v6.2.4000

Merge pull request #823 from lmorg/develop

v6.2

Merge pull request #812 from lmorg/develop

doc: updated changelog

Merge pull request #785 from lmorg/develop

v6.0

Merge pull request #782 from lmorg/develop

#781 two parser bugs affecting `is-null`

Merge pull request #779 from lmorg/develop

updated date in changelog

Merge pull request #776 from lmorg/develop

v5.3.5000

Merge pull request #774 from lmorg/develop

v5.3.4000