integrated branch providing more structured Document model. Added new Distance algos and conditions. Allow to specify strict conditions.
extended mapping from protocolbuffer objects, implemented ExactMatch and overrideMatch configuration param
branch for updating the mapping to protos, extend the configuration
removed protocolbuffers dependency from dnet-pace-core, Builders and Proto specific tests moved in dnet-openaireplus-mapping-utils, adapted dnet-mapreduce-jobs
merged from branch 1.1.0