Enhancements:

• Add support for IMPORT FOREIGN SCHEMA for PostgreSQL 9.5 and higher.
• Improve cost estimates by using the row count estimate.
  Inspiration by Daniele Sevegnani.
• Support two-dimensional geometries with an additional measure dimension.
  Idea by Paul Dziemiela.
• Throw an error if oracle_close_connections() is called inside a transaction that modified Oracle data.

Bugfixes:

• The server crashed for the constructs like <column> = ANY (NULL).
  Report and patch by dreckard.
• oracle_fdw sometimes failed to recognize the SDO_GEOMETRY data type.
  Per report from Bevan Jenkins.
• Some point geometries were not translated properly.
  Per report from Bevan Jenkins.
• Ignore SDO_GEOMETRY elements with zero SDO_ETYPE.
  According to Oracle, that is the correct behaviour.
  Per report from Bevan Jenkins.
• Fix EXPLAIN (VERBOSE) for queries containing current_timestamp.
  This caused "ORA-30081: invalid data type for datetime/interval arithmetic".
  Noticed by "kkwhite".
• Oracle TIMESTAMP(0) fields caused errors like:
  ERROR: invalid input syntax for type timestamp: "1977-06-09 18:00:00."
  Also, handling of dates and timestamps before Christ was broken.
  Report by "abiuan".