2.0
Replace the file system repository with a compressed metadata source file. Reduces the local size of updates metadata from ~26 GB to 1.4GB when storing all updates in the Microsoft Update catalog.
Add lazy loaded indexes in the metadata source file. The metadata source file loads faster and provides fast lookup of most interesting metadata fields.
Use "pre-fetch" to get a categories source file, then use "fetch" with the categories source file as a baseline to get updates. "sync-categories" and "sync-updates" have been removed.
Filters are now optional with "fetch". If omitted, all updates are retrieved.
All commands that had a --repo-path option before now have a --source option that takes a metadata source file.