Improovements of deduplication document
Merge pull request #243 from acz-icm/master

Improovements of deduplication document
Merge branch 'master' of https://github.com/CeON/CoAnSys
adding OptimisticCitationHashGenerator
adding hash generators
adding hash joiner
new distinctor and workflow
type issues fixed
document attacher
citation attacher first version
adding missing imports
adding preassessment
plumbing workflow
obsolete workflows removal