Update changelog
Add a description of the change from the recent merge.
+* Fix `mmdblookup`'s build epoch reporting on some systems. Big endian
+ systems with a 32-bit `time_t` no longer show a database build date of
+ 1970-01-01 00:00:00. Pull request by Rainer Jung. GitHub #143.
+
+
## 1.2.1 - 2017-05-15
* Use autoconf to check the system's endianness rather than trying to do this
