add support for underscores in number

something that'd be nice is if I could a regex like '[0-9]+(_[0-9]{3})+'
to work with the current implementation, because that would provide
extra error checking (whether the `_` are in the right place).
Merge pull request #65 from Varanas/master

add support for underscores in number
don't set status bar on eval
changes to eval
fix stderr flushing
clear results on eval.all

fixes #26
allow dashes in links
fix profiler updating
file links for base
clean up julia ns
clean up doc ns
clean up eval ns
recompile
import pool
don't need a default here
recompile
bump version
organise css
move js
rename js folder