Merge branch 'hotfix/4629'

Close #4629
Merge branch 'hotfix/paginator-db-count-subselect' of https://github.com/ralphschindler/zf2

PR #4641
Closes #4590
Closes #3647
[2.2.1] release readiness

- Updated VERSION
- Updated README
- Updated CHANGELOG
Merge branch 'releases/2.2.1'

2.2.1 readiness
Bump to next dev version

- 2.2.2dev
Merge branch 'version/bump' into develop

Bump to next dev version

Conflicts:
	README.md
	library/Zend/Version/Version.php