Update version in README

Version changed to 1.10.1 as Constantinople postponed

Set version to 1.10.0

Set version to 1.9.1

Update version in README to 1.9.0

Bump hotfix version

Set master version for hotfix 1.8.1

Merge branch 'develop'

Bump hotfix version: 1.7.2 => 1.7.3

Bump hotfix number