feat!: display the parameters as knobs in a grid

Also removed the negbandpass & neghighpass parameters
and replaced them with bandpass & highpass set to -1, to
fit the switches better to the GUI.

Closes #51, closes #173

tracker/presets/ST/Pizzicato_octaves.yml

@@ -1,36 +0,0 @@
-name: Pizzicato_octaves
-numvoices: 4
-units:
-    - type: envelope
-      id: 1
-      parameters: {attack: 0, decay: 74, gain: 64, release: 62, stereo: 0, sustain: 0}
-    - type: oscillator
-      id: 2
-      parameters: {color: 60, detune: 64, gain: 89, looplength: 398, loopstart: 2073, phase: 0, samplestart: 1034961, shape: 89, stereo: 0, transpose: 65, type: 4, unison: 0}
-    - type: oscillator
-      id: 224
-      parameters: {auxgain: 64, color: 64, detune: 63, gain: 128, looplength: 398, loopstart: 2073, outgain: 64, phase: 0, samplestart: 1034961, shape: 42, stereo: 0, transpose: 77, type: 4, unison: 0}
-    - type: distort
-      id: 50
-      parameters: {drive: 94, stereo: 0}
-    - type: addp
-      id: 16
-      parameters: {stereo: 0}
-    - type: mulp
-      id: 14
-      parameters: {bandpass: 0, frequency: 82, highpass: 0, lowpass: 1, negbandpass: 0, neghighpass: 0, resonance: 128, stereo: 0}
-    - type: filter
-      id: 15
-      parameters: {bandpass: 0, frequency: 101, highpass: 0, lowpass: 1, negbandpass: 0, neghighpass: 1, resonance: 94, stereo: 0}
-    - id: 225
-      parameters: {}
-    - type: pan
-      id: 5
-      parameters: {auxgain: 39, outgain: 58, panning: 65, stereo: 0}
-    - type: delay
-      id: 49
-      parameters: {damp: 72, dry: 116, feedback: 22, notetracking: 0, pregain: 86, stereo: 1}
-      varargs: [3835, 4184]
-    - type: outaux
-      id: 6
-      parameters: {auxgain: 22, outgain: 57, stereo: 1}