Piper

Ah, the programParameters can't be static data because parameter values in general (e.g. the default configuration) aren't known until construction - and we can't query the program-parameter relationship from e.g. static Vamp plugin data either. Move to the load response structure.

Merge branch 'output-type-uri'

Add output type URI via static descriptor ("option E")

Merge pull request #2 from piper-audio/fix/schema-typos

Fix id fields not updated after previous renaming.

Fix some examples

Schema validator used for Travis builds rejects empty required list

Update examples for configuration request, load response, and rpc
response - I had overlooked these because their contained objects were
being validated against out-of-date online copies of schema

Merge

Add top-level check script, & one in capnp, & rename json test to check

Add "from" parameter to list request

Make a few more fields compulsory, add note that *Response fields are only used for successful responses

Move to subdirectory

Add top-level check script, & one in capnp, & rename json test to check

Merge from branch piperurl

Add "from" parameter to list request

Merge JSON and Cap'n Proto schema