[tor-project] meek blocked in China since 2016-10-19

https://bugs.torproject.org/20495 It looks like meek has been blocked in China since about 2016-10-19. (See the red line in the attached graph.) I didn't get any reports or anything; I just happened to check the graph. I tried but have not yet been able to reproduce any blocking by making HTTPS requests from a measurement location in China.