API and build change and fix summaries. Doc correctsions
and/or changes are not mentioned here; see the commit messages.
+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.