Use new checksumming transfer decorator, and adjust the group-merging behavior to make use of that decorator. Change LocationUtils to never, ever accept StoreKey, since this doesn't contain enough information to cope with hosted repositories that have a storage-directory override. Adjust a TON of classes to cope with the new LocationUtils changes. Modify UI for displaying details (and editing) hosted repos to display the storage location override as an alternative storage location, if it's present.
pull vabr version back to 1.6, but leave in the managed deps so we don't have to release a new BOM each time we change something only for aprox.
Implement writeReplace for exceptions to ensure parameters are serializable (render them to strings), and adjust to atlas/cartographer changes that store project errors as Strings rather than Throwables. Also, use latest vabr to get better handling for base-URIs when a context-path is used.