Have fix_open subclass fix_file

That guarantees that any open-related scenario is fixed.

Closes #74
Greatly simplify fix_open

Use run ordering to prevent having to subclass.
Tweak a comment
Fix renamed stdlib modules

For #34
Merge remote-tracking branch 'upstream/master' into fix_file_open
Drop the run order for fix_open

Because of the way the pattern has to be structured it is unnecessary.
Fix a typo in the module name

Also fix a typo in the test for check for such typos. =)
Merge pull request #76 from brettcannon/fix_file_open

Have fix_open handle file()
Merge pull request #80 from brettcannon/fix_imports

Fix imports
Merge branch 'master' into simplification