Partial commit of the new libusb DMX plugin.
Continue the USB plugin cleanup.
Remove all the duplicate OutputPort files.
Add missing files
Remove duplicated Device code.
Change the velleman widget to use the new style.
Clean up doxygen for the new libusb plugin.
Fix the build.
Another attempt at fixing the build.
Yet another attempt
Clean up some of the documentation.
Handle libusb hotplug events in the correct thread.
Merge pull request #522 from nomis52/master

Separate out some of the non-USB changes for easy review.
Start the signal thread, so we can Ctrl+C ola_recorder, also exit with a nonzero status if a file is invalid during verification
Handle DOS line endings in ola-recorder, fix a bug with returning exit codes when verify a file. Write a check to use the new verification code.
Merge pull request #524 from peternewman/e1.37-2

Fix some bugs, make some improvements, and add some new checks around ola_recorder
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Merge branch 'master' of https://github.com/OpenLightingProject/ola into e1.37-2
update debian changelog
Merge pull request #525 from peternewman/e1.37-2

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