New %builtinweb entry for ZoneEdit

ChangeLog.md

@@ -25,6 +25,7 @@ repository history](https://github.com/ddclient/ddclient/commits/master).
       - `ipify-ipv4` and `ipify-ipv6` from https://www.ipify.org
       - `myonlineportal` from https://myonlineportal.net
       - `noip-ipv4` and `noip-ipv6` from https://www.noip.com
+      - `zoneedit` from https://www.zoneedit.com
   * New built-in shorthands for obtaining the IP address from the following
     devices ([thanks to Geoff Simmons](https://bugs.debian.org/589980)):
       - `alcatel-530`: Alcatel/Thomson SpeedTouch 530

ddclient.in

@@ -105,6 +105,7 @@ my %builtinweb = (
     'myonlineportal' => {'url' => 'https://myonlineportal.net/checkip'},
     'noip-ipv4' => {'url' => 'http://ip1.dynupdate.no-ip.com/'},
     'noip-ipv6' => {'url' => 'http://ip1.dynupdate6.no-ip.com/'},
+    'zoneedit' => {'url' => 'http://dynamic.zoneedit.com/checkip.html'},
 );
 my %builtinfw = (
     '2wire' => {