Should do as little as possible when DEBUG is not enabled.
Merge pull request #352 from zehome/master

Improve utils.debugit by doing the nested import only when DEBUG is enabled.
Update setup.py

just changed later by higher which seems more appropriate on the sentence
Merge pull request #353 from barzogh/patch-1

Update setup.py
Allow setting of AF_UNIX socket permissions via umask.
Added None case.
Merge pull request #354 from meunierd/umask

Umask