lv2dynparam is a LV2 plugin interface extension that enables plugin parameters
to appear and disappear (i.e. number of voices). It also allows nested grouping
of parameters. Groups can be used for things like ADSR abstraction, i.e. group
of 4 float parameters.
The extension should be suitable for all plugins that expose many and/or
complex data types, like samplers, non-trivial synths, etc.
