Changes:
  - massive rewrite underway, greatly simplifying code
Changes:
  - rewrote prolog into proofsearch
  - removed many old incompatible modules
Changes:
  - finished definition of `solve'
Changes:
  - proofs now once again have lists, instead of k-vectors, of
  arguments, as this was easier to integrate with agda's reflection
Changes:
  - most of auto is already compiling, yay
Changes:
  - and it all works again, I suppose
Changes:
  - everything works, ready to merge
Merge pull request #1 from pepijnkokke/alpha

Alpha