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

• Use Ardour with this version and import a couple LV2 plugins.