Implementing toString() on relational views.
Memory performance improvement: avoid cloning at insert and delete when possible.
check for invalid code points in standard value parser
Merge branch 'master' of git@github.com:impulse-org/pdb.values.git
make sure that parameterized constructors get the most specific type
fix in fast propagated to reference impl
fixed problems with binary writing caused by not allowing instantiated
constructor types in constructor constructors.
removed assert to check for open constructor types because we need to be
able to deliver instantiated types for reified types.
removed assert to check for open constructor types because we need to be
able to deliver instantiated types for reified types.
Merge branch 'master' of git@github.com:impulse-org/pdb.values.git
Overriding all float methods in fast base value factory.
Remove duplicate real constructors.
Remove duplicate int constructors.
Remove real constants.
Adding missing @Override annotations.
Moving all but SourceLocation constructors to fast base value factory.

Additionally, formatting code in base value factory.
Format and sort members.
Move utility methods only consumer.
Merging base value factory into fast base.
Huge commit: Removal of circular dependencies and static links between primitive values and a concrete value factory.

This commit unifies the primitive values of the reference and fast implementation. Further on, there will remain only a single, optimised version of the primitive values. This was previously also the case for SourceLocations. Now, all values optimal, all time.

Further:
* Moving equals() and isEquals() from AbstractSet/List/Map to concrete classes, that it occurs together with hashCode() redefinitions.
* Clean-up; adding @Override annotations; partly reformatting.