fixes issue 349
adding visible to OProperties map
addresses comments in alembic pull request #9
Also ignore pyc files.
If the schema is going to be treated as static, (because of the lack of
connections) then use the default time sampling.
Merge remote-tracking branch 'upstream/master'
Loosening up the cycle epsilon, for testing sample per cycle.
Merge pull request #1 from lamiller0/cycle_epsilon

Loosening up the cycle epsilon, for testing sample per cycle.
Merge pull request #11 from lamiller0/master

Cycle Epsilon  change