added theorem proving in intuitionistic and classical logics.
new version with sums and infix types, works.
added more tests
added sums and products. Still preliminary
added a few comments
added a remark about parse should alpha-convert lambda-forms.
added the CPS stuff
initial revision: re-writing from the full Kanren.
This form allows you to request diffs between any two revisions of this file. For each of the two "sides" of the diff, select a symbolic revision name using the selection box, or choose 'Use Text Field' and enter a numeric revision.