Update to 3GPP TS 29.329 V15.2.0 (2019-09) Add Pre-paging-Supported,717,6.3.26,Enumerated,V,,,M,No Add Local-Time-Zone-Indication,718,6.3.27,Enumerated,V,,,M,No Add Call-Reference-Info,720,6.3.29,Grouped,V,,,M,No Add Call-Reference-Number,721,6.3.30,OctetString,V,,,M,No Add AS-Number,722,6.3.31,OctetString,V,,,M,No

The digested changelog can be found under:
 contrib/debian/changelog
 
You can also find the exhaustive list of change using mercurial history, 
or at the following URL: http://www.freediameter.net/hg/freeDiameter/shortlog