v0.1.0

Added

• An instrument (set of opcodes & accompanying values) can have any
  number of voices.
• A track can trigger any number of voices, releasing the previous when
  new one is triggered.
• Pattern length does not have to be a power of 2.
• Only the necessary opcodes and functions of the synth are compiled in the final executable.
• Harmonized support for stereo signals: every opcode supports stereo
  variant.
• New opcodes: crush, gain, inverse gain, clip, speed (bpm modulation),
  compressor.
• Support for sample-based oscillators (samples loaded from gm.dls).
• Unison oscillators: multiple copies of the oscillator running with
  different detuning and added up to together.
• Support for 32 and 64 bit builds.
• Support different platforms: Windows, Linux and Mac (Intel).
• Experimental support for compiling songs into WebAssembly.
• Switch to CMake for builds.
• Regression tests for every VM instruction, using CTests.
• Compiling as a static library & an API to call Sointu
• Running all tests (win/linux/mac/wasm) in the cloud, using Github
  workflows
• Tools written in Go-lang:
  • a tracker for composing songs as .yml
  • a command line utility to convert .yml songs to .asm
  • a command line utility to play the songs on command line