Get rid of Debianize' RetrieveMethod constructor and merge the DebSpec type into PackageFlags
Add appraisalscribe-data-tests
Fix construction of source package name for ghcjs libraries
Move all monadic computation out of prepare into Download class methods for Uri
Add a field to Debianize to set source package name
Handle more cases in putSrcPkgName
Restore the backwards compatibility code for the Debianize RetrieveMethod