TL0 (src/TL0.s)
  primitive reader+compiler
  implemented in bytecode, using asembler macros to build the image for now
  only able to read lists, symbols (case sensitive) and integers
  all symbols 3char, all integers 3digit, no error cheking, no set,
  no multiple statements in a block, no dotted list, no quote
  only niceties u get are whitespace and comments
  syntax features op (builtin ops), if, lambda, letrec (opp, iff, lam, let)
  exists specifically to be implementable directly in bytecode in reasonabl time
  the bytecode is indented so u can see wtf is going on with arg lists
  reads a single list from stdin, compiles and saves image

TL1 (src/TL1.tl0)
  written in TL0, and provides a slight usability improvement over it
  this time u get symbols and integers of any length, strings (no \),
  multiple statements, doted list, quote and set! syntax
  reads a single list from stdin, compiles and saves image

TL2 (src/TL2.tl1)
  less primitive reader+compiler, written in TL1 syntax
  basic eror reporting
  reads all from stdin, ignoring macro definitions, insted using its own
  hardcoded let/or/and/cond etc, appends a (dump-image) call,
  transforms definitions into a gigantic letrec, then compiles and saves image
  not has compiler marcos, no replistic toplvl with o(1) load/store,
  so the TL3a image produced is ULTRA slow

TL3a (src/TL3.tl2)
  advanced reader+compiler+eval+r5rs env, written in TL2/TL3 syntax
  can read and compile the full syntax, with macros and shit
  TL3.tl2 file is written in somwat weird way to alow it to be compiled
  with both TL2 and TL3, so in standard boostrap sequence u run TL3.tl2 file
  through vm 3 times (for good mesure) - TL3a TL3b and finally TL
  reads from stdin, execs (main-init) and dumps image with (main) as
  entry point to hardcoded path "TL3b"

TL/TL3b (src/dump.scm, src/TL3.tl2)
  functionally same as TL3a exept fast and execs script from command line
  instead of dumping image
  this is the final stage, finished product redy for use
  reads and evals script specified on command line
  u can now bild new images with this one, see src/dump.scm