+Plugin to support importing and exporting notices through Atom and RSS feeds.
+The OStatus plugin concentrates on user-to-user cases for federating StatusNet
+and similar social networking / microblogging / blogging sites, but includes
+low-level feed subscription systems which are used by some other plugins.
+
+Uses PubSubHubbub for push feed updates; currently non-PuSH feeds cannot be
+subscribed unless an external PuSH hub proxy is used.
+
+
+Configuration options available:
+
+$config['ostatus']['hub']
+ (default internal hub)
+ Set to URL of an external PuSH hub to use it instead of our internal hub
+ for sending outgoing updates in user and group feeds.
+
+$config['ostatus']['hub_retries']
+ (default 0)
+ Number of times to retry a PuSH send to consumers if using internal hub
+
+
+Settings controlling incoming feed subscription:
+
+$config['feedsub']['fallback_hub']
+ To subscribe to feeds that don't have a hub, an external PuSH proxy hub
+ such as Superfeedr may be used. Any feed without a hub of its own will
+ be subscribed through the specified hub URL instead. If the external hub
+ has usage charges, be aware that there is no restriction placed to how
+ many feeds may be subscribed!
+
+ $config['feedsub']['fallback_hub'] = 'https://superfeedr.com/hubbub';
+
+$config['feedsub']['hub_user']
+$config['feedsub']['hub_password']
+ If using the fallback hub mode, these settings may be used to provide
+ HTTP authentication credentials for contacting the hub. Default hubs
+ specified from feeds are assumed to not require
+
+
+For testing, shouldn't be used in production:
+
+$config['ostatus']['skip_signatures']
+ (default use signatures)
+ Disable generation and validation of Salmon magicenv signatures
+
+$config['feedsub']['nohub']
+ (default require hub)
+ Allow low-level feed subscription setup for feeds without hubs.
+ Not actually usable at this stage, OStatus will check for hubs too
+ and we have no polling backend. (The fallback hub option can be used
+ with a 3rd-party service to provide such polling.)