Reflow and sort the changelog.

ChangeLog

@@ -10,16 +10,9 @@ Changes in version 0.2.7.6 - 2015-12-10
       performance. Fixes bug 17222; bugfix on 0.2.4.8-alpha. Discovered
       by Mohsen Imani.
 
-  o Minor bugfixes (correctness):
-    - When displaying an IPv6 exit policy, include the mask bits correctly
-      even when the number is greater than 31. Fixes bug 16056; bugfix on
-      0.2.4.7-alpha. Patch from "gturner".
-    - The wrong list was used when looking up expired intro points in
-      a rend service object, causing what we think could be reachability
-      issues for hidden services, and triggering a BUG log. Fixes bug
-      16702; bugfix on 0.2.7.2-alpha.
-    - Fix undefined behavior in the tor_cert_checksig function. Fixes bug
-      17722; bugfix on 0.2.7.2-alpha.
+  o Minor features (geoip):
+    - Update geoip and geoip6 to the December 1 2015 Maxmind GeoLite2
+      Country database.
 
   o Minor bugfixes (compilation):
     - When checking for net/pfvar.h, include netinet/in.h if possible.
@@ -28,9 +21,16 @@ Changes in version 0.2.7.6 - 2015-12-10
     - Fix a compilation warning with Clang 3.6: Do not check the
       presence of an address which can never be NULL. Fixes bug 17781.
 
-  o Minor features:
-    - Update geoip and geoip6 to the December 1 2015 Maxmind GeoLite2
-      Country database.
+  o Minor bugfixes (correctness):
+    - When displaying an IPv6 exit policy, include the mask bits
+      correctly even when the number is greater than 31. Fixes bug
+      16056; bugfix on 0.2.4.7-alpha. Patch from "gturner".
+    - The wrong list was used when looking up expired intro points in a
+      rend service object, causing what we think could be reachability
+      issues for hidden services, and triggering a BUG log. Fixes bug
+      16702; bugfix on 0.2.7.2-alpha.
+    - Fix undefined behavior in the tor_cert_checksig function. Fixes
+      bug 17722; bugfix on 0.2.7.2-alpha.
 
 
 Changes in version 0.2.7.5 - 2015-11-20