https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=225442
Summary of change logs:
shadowsocks-libev (3.1.3-1) unstable; urgency=medium
* Fix a bug in UDP relay.
shadowsocks-libev (3.1.2-1) unstable; urgency=medium
* Fix a bug in DNS resolver.
* Add new TFO API support.
shadowsocks-libev (3.1.1-1) unstable; urgency=high
* Fix a security issue in ss-manager. (CVE-2017-15924)
Additional port changes:
* Added LICENSE_FILE
* Changed static library to shared library
* Added USE_LDCONFIG
* Sorted GH_TUPLE
* Added INSTALL_TARGET=install-strip
* Added optional shell completion files for BASH and ZSH