• Update Sonivox sources, build tools

This version is not available from JitPack because it won't build on their system. It builds fine elsewhere. I have raised an issue, which has been ignored. The changes in the Sonivox sources are minor, so not worth bothering with, but I had already made this release.

• Update Sonivox sources, build tools

• Add fix for plugging in headphones by @ygtorres
• Update build tools

• Update sonivox sources

• Convert native audio output to oboe, uses OpenSLES or AAudio on newer devices
• No API changes

• Add getInstance() methods to ensure only one instance of the driver in an app and make constructor private
• Tidy up demo app
• Update build tools

    Mididriver midi = MidiDriver.getInstance();
    // or
    Mididriver midi = MidiDriver.getInstance(this);  // Add listener
    // or
    Mididriver midi = MidiDriver.getInstance(() ->  // Use lambda expression
        // Do whatever
        );

• Add setReverb by @b3b
• Update build tools

    boolean setReverb(int preset) // Set Reverb effect preset for EAS
                                  // synthesizer (value from
                                  // ReverbConstants). Returns true
                                  // on success, false on failure

• Updated build scripts and sonivox sources
• Restored missing functions

Google have removed the functions for streaming midi code to the synthesiser. I have restored them in an addition file (eas_midi.c).

• Updated build scripts and sonivox sources

• Code update by @TacoTheDank and platform_external_sonivox