opal-zig v2.0.1-1

Changed

• Binds opal 2.0.1, which fixes a 32-bit signed overflow in the output resampler.
  The overflow was reachable whenever a track swings more than half of full scale
  between two consecutive chip samples, and it aborted the process outright under
  any toolchain that traps on signed overflow, which includes Zig's ReleaseSafe.

Added

• A regression test that drives the resampler across a full-scale step, the case
  that used to overflow, and pins the interpolated result.