Agavepy

Added
- Added support for unprivileged metadata queries.

Changed
- Improvements to test suite, including a Docker image for portability.

Removed
- No change.

Added
- Added support for v2 of admin_password grant (role-based version).

Changed
- Fixed issue with persisting existing clients to cache file.

Removed
- No change.

Added
- Added support for enabling and disabling systems.

Changed
- Fixed `path` parameter for files.manage operations.

Removed
- No change.

Added
- Added support for http proxies.

Changed
- No change.

Removed
- No change.

Added
- Added support for token_callback on Agave object, to be called any time a token is refreshed.
- Added support for passing a headers object to any agavepy operation.
- Added support for search parameter to all get operations.
- Added support for passing a notifications to the files.importData operation.
- Added convenience method download_uri on the Agave client to download an agave URL or jobs output URL to an
absolute path on the local file system.

Changed
- Fixed issues with permissions and roles definitions in swagger resources file.

Removed
- No change.

Added
- Additional test coverage.

Changed
- Fix geturl in case client is constructed with only an access token.
- Fixed status values in async module to align with Agave.
- Modified the test suite so that it can be run with different combinations of credentials.

Removed
- No change.