Here's the commit testing I am putting into my sample server:

1. Ensure bagit and bag-info.txt exist and are parsable.
   • fail if any cannot be read
   • other tag files are not checked
2. Compare all manifests to ensure they cover the same files
   • fail if there are any differences
3. Test for existence of all files listed in manifests
   • fail on any missing
4. Test for extraneous files
   • fail on existense.