2015-05-26 UTC
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pfefferle !tall tantek I added a first draft in 2012 https://github.com/pubsubhubbub/wordpress-pubsubhubbub/commit/46c86dfe52614ae128f668e5a14ce15c58a189e7 but the final commit (that also supports arbitrary data) was 2013 https://github.com/pubsubhubbub/wordpress-pubsubhubbub/commit/0c10d0bddd74ba746276a50479da9b9ac2109a4a