Issue #279: Ignore snapshots without meta file

This may be because of a failed snapshot, or one that is currently running.
Merge pull request #317 from ambiata/topic/snapshot-ignore-empty

Issue #279: Ignore snapshots without meta file
Switch ivory-cli to use hadoop-dev for now
Merge pull request #312 from ambiata/topic/ivory-fast-cli

Don't use hadoop jar for running ivory cli tests
Add nested and/or filtering
Merge pull request #323 from ambiata/topic/filter-and-or

Add nested and/or filtering
Add tombstone to Value.toStringWithStruct
Fixed dictionary filter validation
Reducers as far as the eye can see
Merge pull request #321 from ambiata/wip/reducaddon

WIP: Reducageddon
Fix scaladoc build due to DateTime macro
Fix MeanInDaysReducerSpec for edge cases
Fix DictionaryTextStorageV2Spec when proportion had newline
Set per-build ivy caches because SBT is a piece of shit
Add argonaut to dependencies
Merge pull request #336 from ambiata/topic/argonaut

Add argonaut to dependencies
Moved to using notion implementations of location and store.
notion cdh4 version to match cdh5 version.
Updating IvoryLocationSpec with notion Location's
Merge pull request #335 from ambiata/topic/notion

Moved to using notion implementations of location and store.