Added
- Added a new HTTP endpoint, `PATCH /api/v1/metadata/{path}` supporting modifying
existing metadata using a `application/json-patch+json` or a
`application/merge-patch+json` patch.
- Added client-side methods for replacing, updating (similar to `dict.update()`),
and patching metadata.
Fixed
- Fixed regression introduced in the previous release (v0.1.0b1) where exceptions
raised in the server sent _no_ response instead of properly sending a 500
response. (This presents in the client as, "Server disconnected without
sending a response.") A test now protects against this class of regression.