TODO

 Types / Classes
 ===============

 * functions
 * objects (everything an object)
 * classes
 * symbols
 * strings
 * lambdas
 * lists
 * floats
 * full numeric tower
 * vectors
 * dict


 Features
 ========

 * built-in http support
 * blocks (multiple)
 * docstrings
 * list comprehensions
 * immutable data structures
 * advice (aka AOP)
 * decorators
 * low-level hardware access
 * inline asm (?)
 * threads
 * erlang style threads (as a lib?)

 Syntax
 ======

 * regex literals
 * dot for attribute access
 * space to send a message, args in parens
   (parens optional w/ no args)


 Other
 =====

 * parser hooks/functions (like Factor's parsing words)

 * gc
 * ffi

 * JIT compiler
 * optimizations