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.yml

@@ -1,38 +1,33 @@
-name: Pizzicato
-numvoices: 4
+name: pizzicato
+numvoices: 1
 units:
-    - type: envelope
-      id: 1
-      parameters: {attack: 0, decay: 67, gain: 64, release: 62, stereo: 0, sustain: 0}
+    - id: 223
+      parameters: {}
+      comment: Main oscillators
     - type: oscillator
       id: 2
       parameters: {color: 60, detune: 64, gain: 74, looplength: 137, loopstart: 549, phase: 0, samplestart: 1034191, shape: 89, stereo: 0, transpose: 40, type: 4, unison: 0}
-    - type: distort
-      id: 17
-      parameters: {drive: 93, stereo: 0}
-      disabled: true
-    - type: oscillator
-      id: 10
-      parameters: {color: 59, detune: 63, gain: 67, looplength: 100, loopstart: 942, phase: 0, samplestart: 1633072, shape: 56, stereo: 0, transpose: 55, type: 4, unison: 2}
-      disabled: true
-    - type: addp
-      id: 11
-      parameters: {stereo: 0}
-      disabled: true
     - type: oscillator
       id: 221
       parameters: {color: 64, detune: 63, gain: 128, looplength: 398, loopstart: 2073, phase: 0, samplestart: 1034961, shape: 42, stereo: 0, transpose: 65, type: 4, unison: 0}
     - type: addp
       id: 16
       parameters: {stereo: 0}
+    - id: 224
+      parameters: {}
+      comment: Main envelope
+    - type: envelope
+      id: 1
+      parameters: {attack: 0, decay: 67, gain: 64, release: 62, stereo: 0, sustain: 0}
     - type: mulp
       id: 14
       parameters: {stereo: 0}
     - id: 222
       parameters: {}
+      comment: Effects & output
     - type: filter
       id: 15
-      parameters: {bandpass: 1, frequency: 55, highpass: 0, lowpass: 1, negbandpass: 0, neghighpass: 0, resonance: 128, stereo: 0}
+      parameters: {bandpass: 1, frequency: 55, highpass: 0, lowpass: 1, resonance: 128, stereo: 0}
     - type: pan
       id: 5
       parameters: {panning: 64, stereo: 0}