Update .horde.yml with extended information.

.horde.yml

@@ -7,3 +7,31 @@ description: >
   2369 & RFC 2919.
 list: dev
 type: library
+homepage: https://www.horde.org/libraries/Horde_ListHeaders
+authors:
+  -
+    name: Michael Slusarz
+    user: slusarz
+    email: slusarz@horde.org
+    active: true
+    role: lead
+version:
+  release: 1.2.6
+  api: 1.2.0
+state:
+  release: stable
+  api: stable
+license:
+  identifier: LGPL-2.1
+  uri: http://www.horde.org/licenses/lgpl21
+dependencies:
+  required:
+    php: ^5.3 || ^7
+    pear:
+      pear.horde.org/Horde_Mail: ^2
+      pear.horde.org/Horde_Translation: ^2.2
+      pear.horde.org/Horde_Util: ^2
+  optional:
+    pear:
+      pear.horde.org/Horde_Mime: ^2.5
+      pear.horde.org/Horde_Test: ^2.1