working on equations and maybe matrices and fixing up differentiation
organizing things, sort of
why did I ever commit the script outputs?
changing prune to be a visitor pattern.  maybe I'll make a generic visitor and have prune and ToStringMethod inherit from it
organizing ToString methods into a separate folder
moved verbose string output to a visitor-based tostring subclass
more bug fixing
made Visitor a class of its own for all to inherit from
moved toVerboseStr to a ToString subclass
changed ToString:apply to ToString:__call
fixing up tostring methods more
more fixing up tests
got rid of applyToAll.  now it's all Visitor child classes.
cleaning up require loops
got rid of intermediate requires
getting rid of some extra files
yup
fixing diff
organizing
merged distribute into prune