release for paper
major refactor for paper. merges in github.com/mathematicalmichael/mud-examples into this repo.
rc3 and rc2 are associated with git history that's no longer here.
rc4 is a force-pushed re-working of PR #55 via PR #65
maintains full compatibility with mud-examples but only if latex is installed.
figure filename "tikonov" -> "tikhonov" fixed.