Connect to DBG. Basic structure done.
run ok. can display stuff on the screen. can make some instant small changes.
showing variables by the format of OnlinePythonTutor.
Setup for heroku.
change npm version.
update socket.io config.
change socket io version.
fix socket host.
try different debugging port.
Change debugging port to 6006.
add readme.
add log info.
abide to OPT format, done in global level.
add stack trace.
integrate with python tutor's frontend code.
move my old code to legacy/ folder.y
fix line num of the last step and name of functions on stack.
refactor btmsg to backtraceData.
convert some python tests to javascript tests. without the golden file though.
disable log. add localhost to createConnection. it fixes the bug on amazon ec2.