New release 0.9.21 of Brownies Collections.
See
http://www.magicwerk.org/page-collections-changelog.htmlBug fix: null was not counted correctly in getCount() / getCountByKey()
Bug fix: in KeyList/KeySet removeAllByKey
Bug fix: withPrimaryElem()/withUniqueElem()
Added: ICollection: copy/crop
Added: Manifest has Automatic-Module-Name set and is OSGI aware