v2.66.0

Fixed:

• OcrdFile.url can now be removed properly, #1226, #1227
• ocrd workspace find --undo-download: Only remove file refs if it's an actual download, #1150, #1235
• ocrd workspace find --undo-download: When --keep-files is not set, remove file from disk, #1150, #1235
• OCRD_LOGGING_DEBUG: Normalize/lowercase boolean values, #1230, #1231
• Workspace.download_file: Use Ocrd.local_filename if set but not already present in the FS, #1149, #1228

Changed:

• Install ocrd with pip --editable inside Docker, #1225, OCR-D/ocrd_all#416
• Reduce log spam in ocrd_network, #1222
• CI: Stop testing for 3.7, #1207, #1221

Added:

• Separate docker versions for tensorflow v1, tensorflow v2 and torch, #1186
• Processing server can serve as a proxy for METS Server TCP requests, forwarding to UDS, #1220
• ocrd workspace clean to remove "untracked", i.e. not METS-referenced, files, #1150, #1236
• -p now supports parameter preset resources in addition to raw JSON and absolute/relative paths to JSON files, #930, #969, #1238