Made Work IClonable<work>

It did already have "public Work Clone()"
Removed not needed Uncreate method

Use Free instead
WeakReference<T> doesn't have a Target property

WeakReference has Target and IsAlive but WeakReference<T> doesn't.
Small review
Renaming and Rearranging

CurrentThreadIsWriter to IsCurrentThreadWriter
CurrentThreadIsReader to IsCurrentThreadReader
More review

Removing not needed code
Using ReferenceEquals
ArrayPool and ArrayReservoir

ArrayReservoir is a proxy for ArrayPool allowing to make a cut for not
FAT builds. Yet ArrayReservoir will handle EmptyArray and so it is no
longer needed in ArrayPool.
Fixed tests to match renamings ReadWriteLock
No more IPromised nor IPromsed<T>

IPromise and IPromise<T> are still there

Also TrackingThreadLocal and NoTrackingThreadLocal implementation of
Observer<T> will allow to set the instance to an exception.
LazyBucket replaced with NeedleBucket