suggest CacheMxFileSize in the README
in our hash on datasets to check if content has been modified remotely, include the harvester version number so we can more easily force an update when the harvester source code is updated
in package extras put source_title which stores the harvester source's title; it's redundant with some 'virtual' extras that the harvester plugin adds at run time to output, but we really want it for when we import CKAN extras into our Drupal side which would like to know where the data sources came from