0.15.0

Changes:

• d3b614d Update java/spark for version 0.15.0 (#435)
• 066c979 Update resume ingestion (#434)
• ed993c6 consolidate commits and fragment metadata (#433)
• c6409b5 disable non-empty domain preload (#432)
• 8f8fefd write anchors in a separate fragment (#431)
• c59030b consolidate and vacuum commits (#430)
• c4823f4 Create variant stats array during ingestion (#426)

This list of changes was auto generated.