extensions: hide symbols by default Hide extension.fdx symbols by default, by setting the target property <LANG>C_VISIBILITY_PRESET hidden. This requires cmake 2.8+ Explicitly export fd_ext_init() and fd_ext_fini(), using gcc or clang's __attribute__((visibility()))

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