* bug fixes
* new features
* compatibility breakers:
SMPP module users should note that the 'msg-id-type' default behaviour
has changed. The SMPP spec says that msg ids should be C strings and
hence we treat them as such per default. If your SMSC gives msg ids
in submit_sm and deliver_dm PDUs in different numbering basing, then
please use the 'msg-id-type' config directive to set it accordingly.