Do the flipping trick correctly. Now the entries of a square differentiation matrix are symmetric about the anti-diagonal with an opposite sign.
1. Forcing symmetry for barycentric weights of the first kind points. 2. Forcing symmetry for all square differentiation matrices.
A careless mistake.
Adding tests for exact symmetry of square differentiation matrices.
Upping a tolerance before merging in fix-barydiffmat
Resolving merge conflicts
Merge branch 'fix-barydiffmat' into development