# todo...

- next up:

    - does apply-in support keyword args? it should...

    - modules, importing


- Metadata literal syntax:
  Like in Liquid/Python, I want to allow "literal metadata syntax" at the
  beginning of lambda/define bodies:

    (define (f x y)
      (:doc "this and that")
      (:signature ...)
      (+ x y))

  However, as the values need to be evaluated, this will probably require some
  sort of transformation in Liquid/D.  E.g. transform it to a WITH-METADATA
  expression.

- We really need to start documenting all these functions... or find a way to
  generate docs from code.  (But that requires metadata literal syntax, etc.)

+ Tracing:

  Normally, the interactive interpreter should not display every evaluation
  step. Let's turn this on with (TRACE #t) and off with (TRACE #f).

- Liquid should be able to load and run files from the command line.
  IOW: simple command line parsing in liquid.d.

- ENVIRONMENT-ALL-NAMES is awful slow. Figure out why, and fix.
  (First suspect: APPEND...)

- We should probably have built-in modules as well. Create a 'sys' module that
  has a timer function, so we can time the slow APPEND & friends.