replace dbapi and cql with cassandra-driver
this breaks everything, again
use cassandra driver validation and alikes
add batch_insert
add missing utils module
add atomic switch for batches
update version
fix cleanup batch query mistake
keep libev optional
more solid batch generation
fix typo
bump a version
bring back support for custom consistency levels
release it
dont setup connection many times
better connection handling
enable connection metrics via connection.setup
drop unused test
bump version