Ignore htmlcov directory and add missing twisted requirement to requirements file
Revert "Insteon - Change level back to 1 -100% when used with ramp, was 1-15"

This reverts commit 4b5a003e7889c4fd5d9993578267f13bd2063c67.
Revert "Revert "Insteon - Change level back to 1 -100% when used with ramp, was 1-15""

This reverts commit 11b76c202113a7f2634724ac247c42d564b5e3aa.
Work around race condition in Inteston_Interface tests