makes pygments lexer use existing tokenizer
tweaks step / run in interpreter
started opcode tests
got rid of utils, cleaned up image. broke integration. good
added script to recreate expected and used it
adds binary op opcode tests
adds zero division catch to interpreter
adds COMPARE opcode tests
add tests for DUP and POP TOPX
adds ROT_TWO test
little fix
adds JUMP and POPJUMP tests
adds repeat step test
tweaks to REPEAT_STEP handler
add define commands tests
add name attribute to user commands
got rid of util imports
adds tests for COMMAND
adds coverage stuff to gitignore
add RETURN tests