Make "bin/trial --version" runnable in Python3
|Reported by:||Vladimir Perić||Owned by:||Vladimir Perić|
branch-diff, diff-cov, branch-cov, buildbot
As a first step to allowing Trial to run in Python 3, it should be possible to ask it about the version of Twisted currently used. This will assure that the relevant files (mostly in twisted.python) at least have Python3-compatible syntax.