Beem

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* HiveSigner support added
* api link to steemconnect has been fixed
* change recovery account added to beempy
* hive node has been added
* add account get_notifications and mark_notifications_as_read
* beempy notifications has been added
* bridge api support added
* config storage improved and add get_default_config_storage, get_default_key_storage and get_default_token_storage
* list_all_subscriptions and get_account_posts added
* image upload url fixed for HIVE
* reduce number of performed api calls on Steem object creation

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* Add hive node
* get_feed uses now discussion_by_feed
* get_account_votes has been fixed
* ActiveVotes has been fixed
* Discussions has been fixed
* raw_data parameter added to all discussions
* beempy curation, beempy votes and beempy pending has been fixed
* Votes table improved
* fix curation and author reward calculation

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* Fix asset check in Amount and Price
* Fix get_curation_rewards for comments
* Fix empty return in _get_account_history
* Fix several unit tests
* Fix deprecated collections import
* Fix more HIVE/HBD symbols in beempy for HIVE
* Add information about HIVE in the documentation

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* HIVE nodes are now also detected as appbase ready (thanks to crokkon)

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* add steem node
* fix 'dict' object has no attribute 'split

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* Allow to use HIVE/HBD also in operations