* Removed all __future__ imports from code
* Removed all six dependencies
* Removed all future_builtins imports
* Removed all Python 2 related code
Closes: deluge-torrent/deluge#325
This commit reverts namespace for the plugins and uses a module prefix
"deluge_" in it's place. The distribution package name remains the same
for now but will also be considered to use a prefix to help find the
third-party plugins e.g. Deluge-{Plugin} and the pluginmanager will
strip the prefix for displaying.
The change is a result of problems trying to package Deluge with
pyinstaller and the pkg_resources namespaces is not compatible.
Testing alternatives to using the pkgutil or PEP420 (native) namespaces
did not yield any joy either as importing eggs with namespaces does not
work. [1]
At this point importable eggs are considered deprecated but there is no
viable alternative yet. [2]
[1] https://github.com/pypa/packaging-problems/issues/212
[2] https://github.com/pypa/packaging-problems/issues/244
