Room search

• Added room search algorithm form 2D matrices

Narrowing preserves matrix size

• sorted indexes for narrowing
• added NarrowingPreserveSize

Cartesian product

Added Cartesian product method
Added Cartesian product with distinct pairs method
Narrowing now returns only a specified region (skips empty indexes)

Fixed Acyclic property

• Fixed a node walker in Acyclic property check method

Added derived methods

• Added 10+ derived methods for relations
• Added extremums check and search methods
• Added 3 relation closures
• Changed method signature - IsFullRelation to IsTotalRelation
• Fixed Antisymmetric method collision and it's tests

First stable build

• 3 properties check methods
• common unary and binary operations