#45: Restructurized and documented JW.AbstractCollection.Observer.
#45: Implemented and documented JW.AbstractCollection.Orderer.
#45: Implemented and documented JW.AbstractCollection.SorterComparing.
#45: Restructurized and documented JW.AbstractArray.Inserter.
#45: Restructurized and documented JW.AbstractMap.Inserter.
#45: Documented JW.AbstractCollection.create* methods.