API and build change and fix summaries. Doc correctsions
and/or changes are not mentioned here; see the commit messages.
+2020 March 10; version 3.5.1
+ Add missing health check message types.
+
+2020 March 9; version 3.5.0
+ Added new wormhole send function: rmr_wh_call().
+
+2020 March 6; version 3.4.0
+ Add new wormhole state function: rmr_wh_state().
+
+2020 March 5; Version 3.3.1
+ Correct several "bugs" identified by automatic code analysis.
+
+2020 March 4; Version 3.3.0
+ Add SI95 based unit testing
+ Health check support binary added (reason for minor bump)
+
+2020 February 29; Version 2.4.0
+ Add consolidated testing under CMake
+ Add support binary for health check (SI95 only)
+
+2020 February 28; Version 2.3.6
+ Fix bug in Rt. Mgr comm which prevented table ID from being
+ sent on ack message (RIC-232).
+
+2020 February 26; version 3.2.5
+ Fix source address bug in SI95 receive/send funcitons.
+ Fix threading issues involving session disconnection in SI95
+ Remove unused SI95 status variable.
+
+2020 February 24; version 3.2.4
+ Fix meid bug (RIC-220) causing core dump.
+
+2020 February 21; version 3.2.3
+ Add meid routing support to the SI95 interface.
+
+2020 February 20; version 3.2.2
+ Fix receive thread related core dump (ring early unlock).
+
+2020 February 19; version 3.2.1
+ Added missing message types (E2-Setup)
+
+2020 February 18; version 3.2.0
+ Added support for new Route Manager and it's ability to accept
+ a request for table update.
+
+2020 February 14; version 3.1.3
+ Fix bug in SIsend which was causing a core dump in some cases
+ where the application attempted to send on a connection that
+ had disconnected. (RIC-207).
+
+2020 February 6; version 3.1.2
+ Fix disconnection detection bug in interface to SI95.
+
+2020 January 31; verison 3.1.1
+ Allow route table thread logging to be completely disabled
+ when logging is turned off.
+
+2020 January 26; verison 3.1.0
+ First step to allowing the user programme to control messages
+ written to standard error. Introduces the rmr_set_vlevel()
+ function, and related environment variable.
+
+2020 January 24; verison 3.0.5
+ Fix bug in SI95 with receive buffer allocation.
+
+2020 January 23; verison 3.0.4
+ Fix bug in SI95 causing excessive CPU usage on poll.
+
2020 January 22; verison 3.0.3
Enable thread support for multiple receive threads.