Initial commit.
Update README.md
Initial takeover from my local darcs repository.
Fixed word wrapping.
Fixed copying projection, added handling readers.
Update README.md
Selection and document editing goes through the projection using constraint based change propagation.

Changed iomap classes to computed-class.
Changed document->document and document->graphics projections to take care of computed states.
Added subseq to string reference mapping.
Added delete/backspace keys to string domain.
Added preliminary tree editing operation to replace a tree node.
Created separate folders for higher-order and generic projections.
Added iomap definer and renamed file to iomap.lisp
Removed *iomap* and added a new parameter to printers instead.
Added filter for reader/printer when using input/output devices.
Added test walker to force all computed states.
Fixed ASD dependency.
Added quote for value when setting a reference value.
Added some experimental code for computed-state test usage.
Implemented deleting tree nodes.
Changed mapping to always have the same structure.
Factored out control + home/end handling.