update CHANGELOG.md and metadata in regard to latest changes and incr…

…ease version to 1.5.1

Publish 1.7.0 Changelog

Update README, CHANGELOG formats and whitespace

Version bump to v1.5.2

release v1.5.0

release v1.4.0

release v1.3.0

release v1.2.0

release v1.1.4