fix: ZoomedLayoutSchemeSpec reflects change to tiling, base layer has 4 tiles, not 2
spark context is now shared amongst all the tests
fix: AccumuloDriver entire zoom level filter, exploits flexographic order correctly now
KryoClosure attempts to replace java serialization with Kryo, works with qualification
run spark with -Dsun.io.serialization.extendedDebugInfo=true
resolve task serialization issues. Tiler and Ingest are now object only.
cleanup type names to match FunctionX notations