A first cut at Python's urllib.request module. Basically only supports urlopen right now, but it's enough for students to get data from web services.
Made self not optional is list_sort_ function
Merge pull request #102 from albertjan/little-bug

Made self not optional in list_sort_ function
Merge branch 'master' of github.com:bnmnetp/skulpt
Merge branch 'master' of github.com:rixner/skulpt into rixner-master