zeder_to_zotero_importer.cc: optimized logging
zeder_to_zotero_importer.cc: optimized logging

ubtue/ub_tools,ubtue/ub_tools,ubtue/ub_tools,ubtue/ub_tools,ubtue/ub_tools,ubtue/ub_tools,ubtue/ub_tools,ubtue/ub_tools