Added tag v2.3.1

Added tag v2.3.0

New release 2.2.1, update date in corresponding files

New release 2.2.0, update date in corresponding files

New release 2.1.0, update date in corresponding files

New release 2.0.0, update date in corresponding files

Disable some compilation's warnings for release 1.9

New release 1.8.0, increase version in corresponding files

New release 1.7.0, increase version in corresponding files

New release 1.6.2, increase version in corresponding files