BSD support and other improvements
- Support for freebsd and many other improvements thanks to Marc S. Brook (https://github.com/nuxy)
- Added option to only block incoming connections thanks to Fathardie (https://github.com/Fathardie)
- Optional automatic installation of dependencies on the install script thanks to gloomy-ghost (https://github.com/gloomy-ghost)
- Some other fixes and improvements thanks to mean-cj (https://github.com/mean-cj)