Log Message:
erlang-esip: Update to 1.0.39

upstream changes:
-----------------
Version 1.0.39
  * Updating fast_tls to version 1.1.10.
  * Updating stun to version 1.0.40.
  * Updating p1_utils to version 1.0.21.

Version 1.0.38
  * Updating stun to version 1.0.39.
  * Updating fast_tls to version 1.1.9.
  * Exclude old OTP releases from Travis
  * Fixes to support compilation with rebar3

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

Version 1.0.36
  * Updating stun to version 1.0.36.
  * Updating stun to version 1.0.36.

Version 1.0.35
  * Fix compilation with Erlang/OTP 23.0 and Travis
  * Updating stun to version 1.0.35.
  * Updating fast_tls to version 1.1.7.

Version 1.0.34
  * Updating stun to version 1.0.33.
  * Updating fast_tls to version 1.1.6.
  * Updating p1_utils to version 1.0.19.

Version 1.0.33
  * Updating fast_tls to version 1.1.5.
  * Updating stun to version 1.0.32.

Version 1.0.32
  * Updating stun to version 1.0.31.
  * Updating fast_tls to version 1.1.4.
  * Updating p1_utils to version 1.0.18.
  * Update copyright year

Version 1.0.31
  * Updating stun to version 1.0.30.
  * Updating fast_tls to version 1.1.3.
  * Updating p1_utils to version 1.0.17.

Version 1.0.30
  * Updating stun to version 1.0.29.
  * Updating fast_tls to version 1.1.2.
  * Updating p1_utils to version 1.0.16.
  * Export useful types

Version 1.0.29
  * Updating stun to version 1.0.28.
  * Updating fast_tls to version 1.1.1.
  * Updating p1_utils to version 1.0.15.

Version 1.0.28
  * Updating stun to version 1.0.27.
  * Updating fast_tls to version 1.1.0.
  * Updating p1_utils to version 1.0.14.
  * Add contribution guide
  * Disable gcov because there is no c part anymore

Version 1.0.27
  * Updating fast_tls to version 1.0.26.
  * Updating stun to version 1.0.26.

Version 1.0.26
  * Updating stun to version 1.0.25.
  * Updating fast_tls to version 1.0.25.
  * Updating p1_utils to version 1.0.13.

Version 1.0.25
  * Updating stun to version 1.0.24.
  * Updating fast_tls to version f36ea5b74526c2c1c9c38f8d473168d95804f59d.
  * Updating p1_utils to version 6ff85e8.