[Devel] Persist / State extension changes

[David Robillard]

On Thu, 2011-11-03 at 23:10 -0400, David Robillard wrote:
> Hi all,
[...]
> To avoid ugly binary breakage, I have put these changes into a new
> "state" extension, which is here:
> 
> http://lv2plug.in/ns/ext/state

I forgot to mention, this is also an extension that uses the recently
discussed and added to LV2 core lv2:ExtensionData and lv2:extensionData.
See:

http://lv2plug.in/ns/ext/state/state.ttl

For an example of how an extension declares an lv2:ExtensionData, and
there is an example of how a plugin uses it here:

http://lv2plug.in/ns/ext/state#Interface

-dr