Log Message:
erlang-stun: Update to 1.0.40

upstream changes:
-----------------
Version 1.0.40
  * Updating fast_tls to version 1.1.10.
  * Updating p1_utils to version 1.0.21.

Version 1.0.39
  * Updating fast_tls to version 1.1.9.
  * Exclude from Travis old OTP releases
  * Reduce log level for requests from incompatible clients.

Version 1.0.38
  * Always log reason for TCP/TLS connection termination.
  * Log relay allocation refreshes at notice level.
  * Log duration of TURN sessions.
  * Log STUN queries at debug (rather than info) level.
  * Hand over more metadata to STUN callback.

Version 1.0.37
  * Updating p1_utils to version 1.0.20.
  * Updating fast_tls to version 1.1.8.

Version 1.0.36
  * Log relay (de)allocation rather than authentication at notice level.
  * Allow worker processes to perform cleanup tasks on shutdown.
  * Support event callbacks.

Version 1.0.35
  * Add session ID, transport, username, and IP addresses to log output.
  * Log number of TURN-relayed bytes and packets.
  * Log plain STUN (Binding) responses.
  * Log all error responses.

Version 1.0.34
  * Allow for binding listeners to specific IP addresses.
  * Use new logging API on Erlang/OTP 22+.

Version 1.0.33
  * Updating p1_utils to version 1.0.19.
  * Fix compatibility issues with Erlang 23
  * Add support for ipv6 clients
  * Improve compatibilty with clients

Version 1.0.32
  * Updating fast_tls to version 1.1.5.
  * Make sure that 'turn_ip' address is used for communicating with peer.
  * Make sure that opened socket uses ipv4.

Version 1.0.31
  * Updating fast_tls to version 1.1.4.
  * Updating p1_utils to version 1.0.18.
  * Update copyright year

Version 1.0.30
  * Updating fast_tls to version 1.1.3.
  * Updating p1_utils to version 1.0.17.

Version 1.0.29
  * Updating fast_tls to version 1.1.2.
  * Updating p1_utils to version 1.0.16.

Version 1.0.28
  * Updating fast_tls to version 1.1.1.
  * Updating p1_utils to version 1.0.15.

Version 1.0.27
  * Updating fast_tls to version 1.1.0.
  * Updating p1_utils to version 1.0.14.
  * Add contribution guide

Version 1.0.26
  * Updating fast_tls to version 1.0.26.

Version 1.0.25
  * Updating p1_utils to version 1.0.13.
  * Updating fast_tls to version 1.0.25.

Version 1.0.24
  * Updating fast_tls to version f36ea5b74526c2c1c9c38f8d473168d95804f59d.
  * Updating p1_utils to version 6ff85e8.