- pseudo unittest; makefile?
    => good tests at:
       http://swiss.csail.mit.edu/~jaffer/Scheme
- find r7rs-small; try a full/compliant implementation in scheme/python?
  eg, macros
- of interest:
    julia
    c
    javascript
    haskell
    go

links:
http://www.defmacro.org/ramblings/lisp-in-haskell.html
https://github.com/mbutterick/mal
http://norvig.com/lispy2.html