v7.2.0

• Moved slice, concat, set, like out of AudioBuffer class into audio-buffer/util
• AudioBuffer class now spec-only (constructor, properties, getChannelData, copyFromChannel, copyToChannel, Symbol.iterator)
• Absorbed is-audio-buffer — available as isAudioBuffer from audio-buffer/util
• equal renamed to isEqual
• fromArray folded into from (eliminated double-copy)
• filledWithVal removed — use fill(from(...), val)
• concat now variadic — concat(a, b, c, ...)
• from(null) throws instead of silently creating 1-sample buffer
• mix throws RangeError on out-of-bounds offset
• Removed noise — use fill(buf, () => Math.random() * 2 - 1)
• Removed invert — use fill(buf, v => -v)
• Removed options.channels alias — use numberOfChannels

Full Changelog: v7.1.0...v7.2.0