Document the default value for new config options in the changelog.

docs/Changes.conf

@@ -32,11 +32,11 @@ Anope Version 2.1.11
 --------------------
 Moved {ns_set}:allowkillimmed to {ns_set_kill}:allowkillimmed.
 Moved nickserv/set/kill and nickserv/saset/kill to the ns_set_kill module.
-Replaced {nickserv}:guestnickprefix with {nickserv}:guestnick.
+Replaced {nickserv}:guestnickprefix with {nickserv}:guestnick (defaults to Guest####).
 
 Anope Version 2.1.10
 --------------------
-Added options:servicealias.
+Added options:servicealias (defaults to no)
 Moved nickserv/set/message and nickserv/saset/message to the ns_set_message module.
 Removed options:useprivmsg.
 Removed options:usestrictprivmsg.
@@ -47,7 +47,7 @@ No significant changes.
 
 Anope Version 2.1.8
 -------------------
-Added {nickserv}:preservedisplay.
+Added {nickserv}:preservedisplay (defaults to no).
 Added the nickserv/drop/display oper privilege.
 
 Anope Version 2.1.7
@@ -84,12 +84,12 @@ Changed the default value of {chanserv}:inhabit to 1 minute.
 Changed the default value of {cs_mode}:max to 50.
 Changed the default value of {ms_ignore}:max to 50.
 Removed options:seed.
-Replaced {webcpanel}:template with {webcpanel}:template_dir.
+Replaced {webcpanel}:template with {webcpanel}:template_dir (defaults to webcpanel/templates/default).
 
 
 Anope Version 2.1.3
 -------------------
-Added options:didyoumeandifference.
+Added options:didyoumeandifference (defaults to 4).
 Added support for multiple SSL fingerprints in oper:certfp.
 Added the chanserv/cert oper privilege for modifying other user's certificate lists.
 Changed networkinfo:chanlen to default to 32 if not set.
@@ -132,4 +132,4 @@ Renamed nickserv:passlen to nickserv:maxpasslen.
 Renamed the charybdis module to solanum.
 Renamed the inspircd3 module to inspircd.
 Renamed the unreal4 module to unrealircd.
-Replaced uplink:ipv6 with uplink:protocol.
+Replaced uplink:ipv6 with uplink:protocol (defaults to ipv4).