0.7.0 (Coquette) release candidate 1

This release brings support for the DDS Security 1.1 specification:authentication, access control and encryption. It also provides significant performance improvements with large samples, by better scheduling of retransmit requests and by avoiding the occasional excessive latency caused by dropping the heartbeat rate too soon.

One can choose to build Cyclone DDS without support for DDS Security if one wants to reduce the size of the resulting library. The default plug-ins are built only if security is enabled and OpenSSL is available, as those are implemented using the cryptographic operations and I/O primitives for handling certificates and exchanging keys that OpenSSL provides. If one chooses to exclude security support from the build, setting any security related property or adding it to the configuration files will result in participant creation failing with a "precondition not met" error.

A lot of effort has gone into testing and checking that malformed or unexpected messages are handled correctly, that message authentication codes are checked and that no data never goes out unencrypted by accident. Still, it is only prudent to assume the existence of vulnerabilities.