- Update of test script to add:

  (1) Compression SNAPPY
  (2) Page type: Dictionary, Data_page_v1, Data_page_v2
  (3) Encoding: PLAIN  (any others are unsupported)
  (4) DataType: BYTE_ARRAY, floats, FIXED_LEN_BYTE_ARRAY

- This is a temporary update to the testing script. A rewrite of this script is planned to tidy it up.

Author: avalerio-tkd