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"Stale" files are now automatically removed during generation! This can be controlled
and disabled.
* Added `remove_stale_files` boolean and `dont_remove` list to config.
* if `remove_stale_files` is true, all files that don't match patterns in `dont_remove`
and were not generated are removed.
Defaults:
`remove_stale_files`: true
`dont_remove`: ['.*'] dotfiles