make rewritten version pass demos
better reloading info
polish code and add nil
fix numbers
refactor file tree
fix an issue of reloader; deal with missing entry
remove calabash
update plan
add if
finishes control flow; fix print nil
modify "at" logic; update print; compile code
move JS to prepublish scripts
use -- instead of comment; some tweaks
add comments and update eval
implemented a call function
enable function
publish a module