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/SY/synth.yml

@@ -1,9 +1,9 @@
-name: Synth
+name: synth
 numvoices: 1
 units:
-    - type: envelope
-      id: 1
-      parameters: {attack: 64, decay: 64, gain: 128, release: 64, stereo: 0, sustain: 64}
+    - id: 75
+      parameters: {}
+      comment: Modulations
     - type: oscillator
       id: 2
       parameters: {color: 64, detune: 64, gain: 128, lfo: 0, phase: 0, shape: 64, stereo: 0, transpose: 64, type: 1}
@@ -16,15 +16,27 @@ units:
     - type: send
       id: 6
       parameters: {amount: 81, port: 2, sendpop: 1, target: 73}
+    - id: 76
+      parameters: {}
+      comment: Main oscillator
     - type: oscillator
       id: 73
-      parameters: {color: 128, detune: 64, gain: 128, lfo: 1, phase: 0, shape: 8, stereo: 0, transpose: 32, type: 0}
+      parameters: {color: 128, detune: 64, gain: 128, lfo: 1, phase: 0, shape: 8, stereo: 0, transpose: 28, type: 0}
     - type: filter
       id: 74
-      parameters: {bandpass: 1, frequency: 32, highpass: 1, lowpass: 1, negbandpass: 0, neghighpass: 0, resonance: 32, stereo: 0}
+      parameters: {bandpass: 1, frequency: 32, highpass: 1, lowpass: 1, resonance: 32, stereo: 0}
+    - id: 77
+      parameters: {}
+      comment: Main envelope
+    - type: envelope
+      id: 1
+      parameters: {attack: 64, decay: 64, gain: 128, release: 64, stereo: 0, sustain: 64}
     - type: mulp
       id: 10
       parameters: {stereo: 0}
+    - id: 78
+      parameters: {}
+      comment: Effects & output
     - type: delay
       id: 11
       parameters: {damp: 64, dry: 128, feedback: 64, notetracking: 2, pregain: 64, stereo: 0}