C/C++ Driver Performance Enhancements

Over the past couple of months, new versions of C/C++ drivers for DataStax Enterprise (v1.6.0+) and Apache Cassandra (v2.10.0+) have been released. These releases fundamentally changed the internals of the C/C++ drivers and are the biggest since their initial 1.0.0 release. They included a complete refactor of internal components, increased test coverage, and improved performance. The new version of the driver has substantially improved throughput by eliminating the need for requests to be processed by a single shared session thread and upgrading I/O handling. These changes have led to decreased resource utilization and better unit testing capabilities. Future releases will focus on increasing test coverage, improving performance, and incorporating user feedback.