root/olares3: links for fvdb-core

root/olares3 fvdb_core-0.4.2.tar.gz
root/olares3 fvdb_core-0.4.0.tar.gz
root/olares3 fvdb_core-0.3.0.tar.gz
root/olares3 fvdb_core-0.2.1.tar.gz