Fix TLS operation with websockets listeners and libwebsockets 2.x. Closes
#186.
Don.t disconnect client on HUP before reading the pending data. Closes #7.
Fix some $SYS messages being incorrectly persisted. Closes #191.
Support OpenSSL 1.1.0.
Call fsync after persisting data to ensure it is correctly written. Closes
#189.
Fix persistence saving of subscription QoS on big-endian machines.
Fix will retained flag handling on Windows. Closes #222.
Broker now displays an error if it is unable to open the log file. Closes
#234.

Support OpenSSL 1.1.0.
Fixed the C++ library not allowing SOCKS support to be used. Closes #198.
Fix memory leak when verifying a server certificate with a subjectAltName
section. Closes #237.

Don.t attempt to install docs when WITH_DOCS=no. Closes #184.