* Copyright updated to include current year.
* Description updated to no longer talk about AMD encoder.
* Increased minimum CMake version to 3.8 from 3.1.
* Renamed project to xmr-ffmpeg-encoders from enc-ffmpeg.
* Add additional compiler options for Clang, GNU GCC, Intel C and MSVC.
* Set the C++ standard to C++17 with no non-standard extensions.
* Slightly improve project generation.
OBS Studio is a little bit behind with the FFmpeg Binaries, so the Zeranoe binaries will lead to the plugin being unable to load - which is not what we want. Instead just use the OBS Studio dependencies and offer a way to specify an already downloaded directory and also respect FFmpegPath if set.