~vertigo/shoehorn

Add DO, ?DO, LOOP, and +LOOP
Add SEAL feature to finalize a dictionary.
Introduce basic header generation.

Doesn't yet support multiple vocabularies, but it can potentially be
easy to do by swapping the contents of vocab out.
Add \-comments and [CHAR] for colon defs.
Inline strings (S") and TX{CREATE,VARIABLE}
Switch back to 65816
Support CREATE, comma
Appendices demonstrating back-ends
Forgot "further work".
First code!!

This version compiled software which ran under k1emu for the first time.
Some changes to its ABI had to be made for this to happen, but on the
whole, the project was a resounding success!!
Use ca65 syntax to enforce locality of labels
Migrate rest of colon compiler to use CPU-specific module.
Compiler primitives to defer to CPU-specific module
Begin factoring CPU-specific definitions into its own file
Move error list into man page
Silence load diagnostics for shoehorn command
Record why I named it shoehorn.
Promote stc-test into its own repo, Shoehorn.