Merge pull request #1909 from getlantern/master

Master
Adding stack trace
#1910 Logging panic trace as a single message
added pull
#1895 Updated flashlight executables
#1895 Updated flashlight executables to include shorter IdleTimeout
#1895 Updated flashlight executables to use tlsdialer.v1 again
release process changes to lantern-binaries repo doesn't get too huge