RecyclableList.BlockCount renamed => RecyclableList.ReservedBlockCount. Fixed to always include the last block.

RecyclableList.LastTakenBlockIndex property added for some scenarios.

RecyclableList.IndexOf & .LongIndexOf fixed to use the correct index.

RecyclableArrayList.AddRange(RecyclableList<T> items) fixed to use the correct index.

Some test cases excluded, where needed.

Recyclable.Collections/RecyclableStack.cs

@@ -49,7 +49,7 @@ namespace Recyclable.Collections
 			LongCount--;
 			if ((List.Capacity * _blockSize) - LongCount == _blockSize)
 			{
-				List.RemoveBlock(List.BlockCount - 1);
+				List.RemoveBlock(List.ReservedBlockCount - 1);
 			}
 
 			return toRemove;