Merge branch 'release/0.4.1' into develop
bump to snapshot
clean out old code
move the downloading of a shard out of the recordreader constructor
and into next to avoid task timeouts
per domain metrics reporting
move cascalog-elephantdb from cascalog to elephantdb and rename elephantdb-cascalog
Be more robust about version hotswap failures.
bump to 0.4.2
Merge branch 'release/0.4.2'