Merge pull request #154 from Xodarap/master

decrease memory consumption during import
adding additional required fields and updating categories method to return hqmf_id
adding aggregator field as it is used for measure calculation
Merge pull request #156 from projectcypress/adding_attributes

adding additional required fields and updating categories method to retu...
Say if measure is episode_of_care within Measure.categories
Merge branch 'include_eoc_in_measures'

Rebasing and merging pull request #155
Change uncertainRange type in data model to IVL_PQ
Remove test code comment
Merge pull request #158 from projectcypress/ivl_fix

Ivl fix
clear hqmf_r2 fields if they are empty and add AnyValue to nested timestamp fields from R1
Updated fields for facility arrivals/departures
Merge branch 'fix_hqmf_r2_fields', fixes #157
added parsing for facility location in HQMF R2
Merge pull request #162 from projectcypress/parse_facility_location

added parsing for facility location in HQMF R2
Update occurrences HQMF pattern to reflect new 'slim' occurrence data criteria
Merge branch 'occurrences_documentation_update', fixes #161
Updated ANY value's to use flavorId
Added back in handling for facility locations
Merge branch 'nonnull_update', fixes #160
Include optional parameter for pulling draft value sets in vs_api