immutable collection for the update
Merge branch 'master' of
https://github.com/Clemzd/active-collections.git

Conflicts:
	active-collections/src/emn/fil/collection/impl/Bag.java
	active-collections/src/emn/fil/collection/impl/OrderedSet.java
	active-collections/src/emn/fil/collection/impl/Set.java