Minor versioning

Patch readme

Patch out common error case

Patch descriptiong

Patch multi-level enum package construction

Example!

clean up final enum

Finish impl of from

Add another one

initial enum generation macro

touch up tests, add crate import

Patch up tests a bit

Clean up some notation, add docs for map_enum

Clean up some notation, add docs for map_enum

add docs for chain, a specialization of the tree