v3.0.0b1

Fixed:

• actuall apply CLI --log-filename
• adapt to Pillow changes
• ocrd workspace clone: do pass on --file-grp (for download filtering)

Changed:

• 🔥 ocrd_utils, ocrd_models, ocrd_modelfactory, ocrd_validators and ocrd_network are not published
  as separate packages anymore, everything is contained in ocrd - you should adapt your requirements.txt accordingly
• 🔥 Processor.parameter now a property (attribute always exists, but None for non-processing contexts)
• 🔥 Processor.parameter is now a frozendict (contents immutable)
• 🔥 Processor.parameter validate when(ever) set instead of (just) the constructor
• setting Processor.parameter will also trigger (Processor.shutdown() and) Processor.setup()`
• get_processor(... instance_caching=True): use min(max_instances, OCRD_MAX_PROCESSOR_CACHE)
• 🔥 Processor.verify always validates fileGrp cardinalities (because we have ocrd-tool.json defaults now)
• 🔥 OcrdMets.add_agent without positional arguments
• ocrd bashlib input-files now uses normal Processor decorator, and gets passed actual ocrd-tool.json and tool name
  from bashlib's ocrd__wrap

Added:

• Processor.metadata_filename: expose to make local path of ocrd-tool.json in Python distribution reusable+overridable
• Processor.metadata_location: expose to make absolute path of ocrd-tool.json reusable+overridable
• Processor.metadata_rawdict: expose to make in-memory contents of ocrd-tool.json reusable+overridable
• Processor.metadata: expose to make validated and default-expanded contents of ocrd-tool.json reusable+overridable
• Processor.shutdown: to shut down processor after processing, optional
• Processor.max_instances: class attribute to control instance caching of this implementation