SanityCheck -- checks if lifting solves deformation equation

Functions with optional argument named SanityCheck:

• correctDeformation(...,SanityCheck=>...) -- see correctDeformation -- correct lifting to avoid obstructions at next order
• firstOrderDeformations(...,SanityCheck=>...) -- see firstOrderDeformations -- use tangent space to create first order perturbations and find relations
• localHilbertScheme(...,SanityCheck=>...) -- see localHilbertScheme -- computes a power series representation of the local Hilbert scheme
• liftDeformation(...,SanityCheck=>...)
• nestedHilbertScheme(...,SanityCheck=>...)
• nestedVersalDeformation(...,SanityCheck=>...)
• versalDeformation(List,List,List,List,SanityCheck=>...)
• versalDeformation(Matrix,Matrix,Matrix,SanityCheck=>...)
• versalDeformation(Matrix,SanityCheck=>...)
• versalDeformation(NestedDeformation,SanityCheck=>...)
• setupNestedDeformation(...,SanityCheck=>...) -- see setupNestedDeformation -- create a first order NestedDeformation from tangent directions and obstruction spaces