[prep-release-3.1.3] Add migration for 3.1.3

[prep-release-3.1.3] Add changelog for 3.1.3-RC2

[prep-release-3.1.2] Add migration to update version to 3.1.2

[prep-release-3.1.2] Add changelog for 3.1.2-RC1

[prep-release-3.1.0-RC6] Add migration for 3.1.0-RC6

[prep-release-3.1.0-RC2] Add migration for 3.1.0-RC2