Merge pull request #575 from isolver/master

ENH: ioSync support for analog input thresholds
Don't draw lines when lineWidth is 0.
Merge pull request #576 from nortcele/master

Don't draw lines when lineWidth is 0.
RF: adjust Builder width of component as drawn on timeline

- seems to have drifted off; looks right with this fix
Merge pull request #577 from isolver/master

BF: Releasing vlc related ctypes obj's
Merge pull request #578 from jeremygray/master

RF: adjust Builder width of component as drawn on timeline
Merge branch 'master' of git://github.com/psychopy/psychopy