- update to 2.3.1:
* Avoid operations on a closed stream file when detecting a socket.
* Correct use of names to allow `from daemon import *`.
Changed:
* Speed daemon start time by computing candidate file descriptors once.
* Remove incorrect double-patch of objects in test cases.
* Deprecate helper function `is_socket`.
* Drop backward-compatible helpers that provided Python 2 support.
* declaration of source encoding ‘utf-8’
* absolute_import
* unicode_literals
* module-level metaclass `type`
* unification of str with unicode type
* renamed standard library exceptions and modules
* raise exception from context exception
All these are default behaviour in Python 3 and need no special
handling.
- drop remove_safe_hasattr.patch, remove_double_patch.patch (upstream)