release v5.2-beta2

release v5.2-beta1

release v5.1.2

release v5.1

release v5.1-beta3

[maven-release-plugin] copy for tag v5.1beta2

migrated/recreated content from legacy website (which used plone) as …

…maven-site-plugin content

[maven-release-plugin] copy for tag v5.1beta1

MARY TTS 5.0 release version