Added envelope visualization
Touch support; resizable piano; more aggressive dynamic compression
0.2 release: Remember UI state; bump manifest version
WIP for different style of instrument UI
Updated CSS class names
More WIP for the new UI style.

CSS changes.
Show title of selected item details.
Removed oscillator gradient
Removed gradient util code
Selected UI is sticky. Start on oscillator.
Added two more oscillators with UI.

Oscillators don't have any settings that can be changed yet.
Need gain nodes and tuning. Oscillators don't seem in sync,
there is an audible beat on some notes.
Updated compressor settings to avoid beats
Tweaked compressor settings
Added UI to control frequency offset and detune of oscillators
Start cleaning up note creation
Introduced note section to group nodes together
Dont use paramcontrollers any more
Removed param controller code
Removed old web page version
Removed more param controller stuff
WIP cleaning up note construction