doc/TODO

   1 * Add the rest of the edge incidence tests. Make sure it works across
   2   cubes, too.
   3
   4 * Add the section (2.9) tests.
   5
   6 * Figure out why the section (2.5) c_ijk1 identity is failing.
   7
   8 * Use distribution combinators[1] to get rid of the orphan instance
   9   warnings.
  10
  11 * Update show definitions.
  12
  13 [1] http://stackoverflow.com/questions/4001861/how-small-should-i-make-make-modules-in-haskell