Upate version to 1.9.2

Upate version to 1.9.1

Update version to from RC 3 to 1.9.0

Upate version to 1.9.0-rc.3

Merge pull request #354 from edeliver/update-hex-docs

Update hex docs to 0.28.4 and add docs for docker support.

Merge pull request #352 from edeliver/version-1.9.0-rc.1

Update version to 1.9.0-rc.1

Cut 1.8.0

Mark 1.7.0

Mark 1.6.0

Mark 1.5.3