add HLL maxOverflow tests
make hll tests deterministic
Merge pull request #449 from metamx/igalDruid

Igal druid
fix bug with reference closing that I swore we fixed
make last commit a final var
[maven-release-plugin] prepare release druid-0.6.75
[maven-release-plugin] prepare for next development iteration
Fix cache population simple way
add test
correct paper submission id
updated binaries
new endpoints
more endpoint cleanup
review comments - remove instance of check
final edits to paper
add dummy ps file for paper
typos, wording, fix overfull hboxes
make graphs look good in B+W + final pdf
ZooKeeper capitalization + minor wording changes for layout
final final