Merge pull request #13355 from dylanahsmith/migration-version

activerecord: Initialize Migration with version from MigrationProxy.

Conflicts:
	activerecord/CHANGELOG.md

Conflicts:
	activerecord/CHANGELOG.md
Merge pull request #13597 from prathamesh-sonpatki/hstore_migration

Make change_table use object of current database adapter
Conflicts:
	activerecord/CHANGELOG.md
	activerecord/test/cases/adapters/postgresql/hstore_test.rb