mongo-c-driver 1.5.0-rc2

It is my pleasure to announce the beta release of mongo-c-driver 1.5.0-rc2

New features and bug fixes:

• MongoDB 3.4 Support
  • MaxStalenessMS
  • MongoDB Handshake
• mongoc_collection_count_with_opts uses the collection's read preference if
  none is passed in
• Improved TLS support
  • Fixed LibreSSL (libssl) support
  • Added LibreSSL (libtls) support
  • Fixed Secure Channel build on VS 2010
  • OpenSSL now supports SNI (all others already do)
• Additional features for Application Performance Monitoring:
  • mongoc_topology_description_has_writable_server
  • mongoc_topology_description_has_readable_server
• connectTimeoutMS timer now begins after DNS resolution, and resets
  for each interface attempted (e.g., if the driver first tries IPv6,
  then IPv4).
• New error code MONGOC_ERROR_DUPLICATE_KEY.
• mongoc_collection_find no longer treats the "filter" key specially in
  queries - querying for a document with a key named "filter" is the same
  now as any other key.
• The server description parameter to the following functions is "const":
  • mongoc_server_description_host
  • mongoc_server_description_id
  • mongoc_server_description_ismaster
  • mongoc_server_description_round_trip_time
  • mongoc_server_description_type
• Exported symbols are no longer declared in seperate export files.
  This could break ABI with applications using clang, which previously
  exported symbols from the internal private ABI.
• mongoc no longer crashes when multi roundtrip bulk operation fails.
• Added support for the new readConcernLevel "linearizable".

Removed configure flags:

• --enable-experimental has been removed and all of its features
  are always available now
• --enable-hardening has been removed. The flag never actually enabled
  any hardening features and has therefore been removed

Thanks to everyone who contributed to the development of this release.

• Everyone

Farewell,
-- A. Jesse Jiryu Davis