Add mpd_allowed_sites filter #70
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Add the mpd_allowed_sites filter. Existing behavior should be preserved exactly as is. I use this hook in a new addon which allows to whitelist a list of sites which can be shared to instead of blacklisting them individually like the restrictSites addon does. My plugin's code is available here: https://github.com/SharkMediaSport/multisite-post-duplicator-whitelist/