RandomVector

Resolved issue where seed=0 results in unstable random behavior. This
was undocumented in the python api.
Now that it is known we can make a stable workaround.
Bugfix

self.input and self.output mixed up.
Structure + Bugfix

Only process if output is connected.
Fix in with output, error in output update.
Problem inherited from Random Node, fixed there also.
Bugfix

Output is always numbers, no need for changeable output sockets.
Enum stability.
Bugfix

Refactoring bug.
Cut instead of copy when writing documentation. Stupid.
Merge pull request #27 from ly29/master

Various Bugfixes