Undertow 0.7.0

What's Changed

• Heirloom chorus and Comb insert interpolation, fast-sine LFOs (#290 item 4) by @cbackstrom80 in https://github.com/cbackstrom80/murmur-app/pull/292
• Classic Filter 2: real resonant peak and a Classic-to-Ladder helper (#290 item 5) by @cbackstrom80 in https://github.com/cbackstrom80/murmur-app/pull/293
• Undertow Karplus-Strong: Stiff stretch, a true allpass designed from B (#290 item 1) by @cbackstrom80 in https://github.com/cbackstrom80/murmur-app/pull/294
• High and Ultra: rate-scaled windowed-sinc reads for pitched samples (#290 item 2) by @cbackstrom80 in https://github.com/cbackstrom80/murmur-app/pull/295
• String operator engine: a waveguide its Audio edges excite (#290 item 3) by @cbackstrom80 in https://github.com/cbackstrom80/murmur-app/pull/296
• #290 controls: String engine lab, Filter 2 peak readout, Undertow STIFF by @cbackstrom80 in https://github.com/cbackstrom80/murmur-app/pull/298
• Cut MURMUR 1.9.0 and Undertow 0.7.0 by @cbackstrom80 in https://github.com/cbackstrom80/murmur-app/pull/299

Full Changelog: https://github.com/cbackstrom80/murmur-app/compare/cast-v0.4.1...undertow-v0.7.0