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/DR/snare 2.yml

@@ -1,60 +0,0 @@
-name: snare
-comment: 'suggested note: E-4'
-numvoices: 1
-units:
-    - type: envelope
-      id: 288
-      parameters: {attack: 0, decay: 53, gain: 64, release: 0, stereo: 0, sustain: 0}
-    - type: oscillator
-      id: 289
-      parameters: {color: 128, detune: 64, gain: 70, phase: 5, shape: 64, stereo: 0, transpose: 54, type: 0, unison: 0}
-    - type: mulp
-      id: 305
-      parameters: {stereo: 0}
-    - id: 338
-      parameters: {}
-    - type: delay
-      id: 309
-      parameters: {damp: 59, dry: 128, feedback: 90, notetracking: 0, pregain: 80, stereo: 0}
-      varargs: [235]
-    - id: 329
-      parameters: {}
-    - type: envelope
-      id: 313
-      parameters: {attack: 0, decay: 68, gain: 73, release: 0, stereo: 0, sustain: 0}
-    - type: noise
-      id: 310
-      parameters: {gain: 110, shape: 42, stereo: 0}
-    - type: mulp
-      id: 314
-      parameters: {stereo: 0}
-    - type: distort
-      id: 326
-      parameters: {drive: 10, stereo: 0}
-    - type: filter
-      id: 339
-      parameters: {bandpass: 0, frequency: 60, highpass: 0, lowpass: 0, negbandpass: 0, neghighpass: 1, resonance: 128, stereo: 0}
-    - type: addp
-      id: 316
-      parameters: {stereo: 0}
-    - id: 328
-      parameters: {}
-    - type: pan
-      id: 292
-      parameters: {panning: 64, stereo: 0}
-    - type: distort
-      id: 323
-      parameters: {drive: 80, stereo: 1}
-    - type: delay
-      id: 322
-      parameters: {damp: 5, dry: 128, feedback: 80, notetracking: 0, pregain: 39, stereo: 1}
-      varargs: [1116, 1188, 1276, 1356, 1422, 1492, 1556, 1618, 1140, 1212, 1300, 1380, 1446, 1516, 1580, 1642]
-    - type: compressor
-      id: 320
-      parameters: {attack: 46, invgain: 29, ratio: 76, release: 64, stereo: 1, threshold: 21}
-    - type: mulp
-      id: 321
-      parameters: {stereo: 1}
-    - type: outaux
-      id: 293
-      parameters: {auxgain: 0, outgain: 67, stereo: 1}