v0.3.7

Enhancements:

• Add TV characteristic for Playbase, see #58;
• Delay setting TV off by 10 seconds. I find the Playbar sometimes reports no input (r:streamInfo of 0) for a couple of seconds, when the Netflix app on my AppleTV or my Bluray player is switching input. Not sure if this is an issue of my (Sony Bravia) TV or of the Playbar.