TODO update

*: to do; @: in progress; #: blocked; +: done; -: rejected

  * read

  * change debug to (format, args, ...) style

  * comment out debug calls (they do cost...)

  * Bperl (perl "\%Sexp::symbols" 'dump)

  * Brandom

  * read: does not recognize missong close paren on EOF

  * idea: have a stack for bound symbols, saved values, and number

    of saved bindings each, to be accessed by something like a

    (local-bindings n) function, with n being the number of levels

    (lambda, let, etc.) this could give us a *nice* stack trace.

    Investigate.

  @ start/end args for dolist/doseq?

  @ fix existing regtests; 028

  + read

  + start/end args for dolist?

  + Brandom

  @ fix regtests; 025

  + read: does not recognize missing close paren on EOF

  + better argument checking (number, types) for Builtins (instead

    of is_def() et al.)