+0.7.3:
+ * New upstreams code:
+ - simplify upstreams API;
+ - unify strings parsing in upstreams definition;
+ - add configuration options for the upstreams;
+ - for failed upstreams re-resolve their addresses;
+ - use all resolved addresses for an upstream (round-robin);
+ - implement stable hashing and use it by default for upstreams;
+ - add unit test for upstreams module.
+ * Rework signals processing in all rspamd workers:
+ - signals are now processed in the event loop;
+ - implement the most common signal handlers for all workers;
+ - add callbacks for workers specific signal handlers
+ * Fix critical issue with fuzzy storage:
+ Fuzzy stroage could not save any hashes on termination due to bugged
+ signals handling
+ * Fix roll history IP storage
+ * Rework ipv4/ipv6 handling in parsing addresses:
+ - turn off support of IPV6_V6ONLY socket option;
+ - create ipv6 socket prior to ipv4 one to handle systems with v6/v4
+ sockets enabled (Linux)
+ * Remove CBL as it's wholly included in Spamhaus XBL (by @fatalbanana)
+ * Remove nszones.com fake RBL (by @citrin)
+ * Fix upstreams interaction for fuzzy_check
+ * Verify spf PTR records (reported by @citrin)
+ * Fix spf MX records parsing
+ * Add compatibility for old libevent (by @yellowman)
+ * Sync bugfixes from libucl
+
0.7.2:
* Convert all maps to the compressed radix trie
* Allow IPv6 addresses in IP maps