Add POST statuses/unretweet/:id

Author: mynetx

CHANGELOG

@@ -4,6 +4,7 @@ codebird-php - changelog
 3.1.0 (not yet released)
 + #143 Add support for proxy types
 + #152 Throw Exception on failed remote media download
++ Add POST statuses/unretweet/:id
 
 3.0.0 (2016-01-01)
 + Add unit testing suite

src/codebird.php

@@ -417,6 +417,7 @@ class Codebird
       'statuses/filter',
       'statuses/lookup',
       'statuses/retweet/:id',
+      'statuses/unretweet/:id',
       'statuses/update',
       'statuses/update_with_media', // deprecated, use media/upload
       'ton/bucket/:bucket',