Update changelog

CHANGELOG.md

@@ -1,3 +1,30 @@
+# Version 20.07
+
+* Changes in this version
+- Add support for using unix sockets in listeners.
+- Make this version compatible with erlang R23
+- Make room permissions checks more strict for subscribers
+- Fix problem with muc rooms crashing when using muc logger
+  with some locales
+- Limit stat calls that logger module issues
+- Don't throw errors when using user_regexp acl rule and
+  having non-matching host
+- Fix problem with leaving old data when updating shared rosters
+- Fix edge case that caused failure of resuming old sessions with
+  stream management.
+- Fix crash when room that was started with loging enabled was later
+  changed to logging disabled
+- Increase default shaper limits (this should help with delays for
+  clients that are using jingle)
+- Fix couple compatibility problems which prevented working on 
+  erlang R19
+- Fix sending presence unavailable when session terminates for
+  clients that only send directed presences (helps with sometimes
+  not leaving muc rooms on disconnect).
+- Prevent supervisor errors for sockets that were closed before
+  they were passed to handler modules
+- Make stun module work better with ipv6 addresses
+
 # Version 20.03
 
 * Changes in this version