Summarized Changelog:
- Allow passing strings for URIs in Python API when unambiguous.
- Fix cases where incorrect translation is used.
- Fix deleting state bundles loaded from the model.
- Fix memory leak when dyn-manifest has no plugins.
- Implement state:freePath feature.
- Add more strict error detection when storing plugin state properties.
- Add option to override LV2_PATH in applications.
- Don't print errors when saving state if correct links already exist.
- Fix issues with loading state with saved files from the model.
- Fix memory errors and Python 3.4+ compatibility in Python bindings.
Depends on D9314