V7.0.0

#661 Discriminator for 2 association field with same type
#655 easier to define other enum instantiation type. or any getter addGetterForType(final Type type, final IndexedGetter<S, T> indexedGetter)
#664 allows for non mapped key
#659 Document how to exclude the jOOQ Open Source Edition as a transitive dependency, when needed
#665 disable speculative index property finding by default