removed the native order conversion during write and read.
integrated float into data processing logic as a RangeField type
change the min and max of range field RS and meta RS to RangeField for generality instead of just int. Modified the serialization method of range field
updated all active unit tests
changed the value field in health dataset schema to Float for testing
support float as range field
Float compression uses the scheme described in Facebook Gorilla paper. http://www.vldb.org/pvldb/vol8/p1816-teller.pdf
List of changes:
valuefield in health dataset schema toFloatfor testing