v2.0.0-beta1

• Revamp API that makes it easier to work with multiple audio formats.
• Refactor the entire library, and rewrite most of the audio format handling code.
• Various performance improvements.
• Create more functional CLI that can convert between different formats.
• Read REGN chunk in BFSTM and BCSTM files.
• CLI: Allow combining or splitting channels from audio files.
• CLI: Allow setting and removing loop points.
• CLI: Add option for displaying file metadata.
• UWP: Update .NET Native compiler. Results in ~30% or more speedup for ADPCM encoding.
• Move to .NET Core tooling 1.0 and Visual Studio 2017.
• Remove builds for all target frameworks except .NET 4.5 and .NET Standard 1.1.
• Move build script from PSake to Cake.