Fix drXtabs to deal with empty subsets
Fix drXtabs to deal with empty subsets
Fix bug in divide to deal with empty values
Change quantile to drQuantile
Change drXtabs to drAggregate
Modify local disk and hdfs connections to not store location as persistent metadata
Fix 'kvApply not found' bug in drFilter when running on HDFS
Modify drRead.table to handle multiple text input files on local disk
Bump version and minor formatting changes
Merge branch 'dev'