* new beemstorage module
* Config is handled by SqliteConfigurationStore or InRamConfigurationStore
* Keys are handled by SqliteEncryptedKeyStore or InRamPlainKeyStore
* Move aes to beemgraphenebase
* Wallet.keys, Wallet.keyStorage, Wallet.token and Wallet.keyMap has been removed
* Wallet.store has now the Key Interface that handles key management
* Token handling has been removed from Wallet
* Token storage has been move from wallet to SteemConnect/HiveSigner

Rename SteemWebsocket to NodeWebsocket and SteemNodeRPC to NodeRPC

Remove non appbase nodes and related tests from all unit tests Improve blockchain.stream() for appbase

Account
* lazy and full are correctly passed
* _parse_json_data() added to parse json
Block
* lazy and full are correctly passed
* empty operations are handled
* op_statistics improved
Blockchain
* virtual ops and ops statistics are seperatly calculated
Comment
* _parse_json_data() added to parse dates and amounts
* author_reputation is parsed to int
* lazy and full are correctly passed
Vote
* lazy and full are correctly passed
* _parse_json_data added to parse date and rshares and reputation
* vote.time is a datetime object
* json() returns the original string
Witness
* lazy and full are correctly passed
GrapheneRPC
* time_limit removed, as it supresses KeyboardInterrupt
* ws.settimeout() is set for websocket
* WebSocketTimeoutException  handling added
Unit tests
* test_account fixed
* test_time_limit removed from test_steemnoderpc
* checks added to test_blockchain_batch

Comment
* Add example
Steem
* improve docu
Exception
* Add TimeoutException
GrapheneRPC
* add time_limit to implement a timeout for websocket connection
Unit test
* add test for timeout implementation

Fix unit tests and WitnessesRankedByVote

CLI
* updatenodes added, this command can be used to update the nodes list
NodeList
* update_nodes added, this command reads the metadata from fullnodeupdate, which contain newest nodes information
* add option wss and https fo get_nodes
Unit tests
* use updatenodes in all tests

NodeList
* replaces get_node_list from utils.py
* is a list and contains all nodes as dict
* get_nodes() returns the url in a list
Utils
* get_node_list removed
Unit Tests and Examples adapted to the changes

Wallet
* getKeysForAccount added
* getOwnerKeysForAccount, getActiveKeysForAccount, getPostingKeysForAccount added
beemapi
* WorkingNodeMissing is raised when no working node could be found
GrapheneRPC
* cycle([urls]) is replaced by the nodes class
Nodes
* Node handling and management of url and error_counts is performed by the nodes class
* sleep_and_check_retries is moved to the nodes class
* Websocket, steemnodrpc were adpapted to the changes
Unit tests
* new tests for the nodes class
* tests adapted for websocket and rpcutils

Account
* print_info improved (Last Vote added)
* entryId changed to start_entry_id in get_feed, get_blog_entries and get_blog
*rpc.get_account_history moved to _get_account_history
* estimate_account_op added, can be used to fastly get account op numbers from dates or block nums
* history and history_reverse uses estimate_account_op
Exception
* KeyNotFound removed
Memo
* raises MissingKeyError instead of KeyNotFound
Price
* small improvement
Steem
* __repr__ added
Transactionbuilder
* get_potential_signatures, get_transaction_hex and get_required_signatures added
* raises MissingKeyError instead of KeyNotFound
VotesObject
* __contains__, __str__ and __repr__ added
Wallet
* raises MissingKeyError instead of KeyNotFound
Witness
* __contains__, __str__ and __repr__ added to WitnessObject
Steemnoderpc
* small improvements
Operationsid
* producer_reward added
Unit tests
* new function added and tests adapted to changes

Account
* refactoring of  init
* Doku improved
Asset
* AssetNotFound handling improved
* Operation for equal and unqual added
Price
* usage of the new equal operation from Asset
Steem
* Improve key handling in account creation
Storage
* add sqlite3_copy and recover_with_latest_backup
beemgraphenebase/account
* add get_blind_private, get_public_key, get_secret, derive_private_key, child and derive_from_seed
Unit tests
* Use setUpClass to speed unit tests up (Steem is now created at the begging auf each unit test class
* Add unit tests for asset
* Add unit test for new beemgraphenebase/account functions

CLI
* improved password handling and confirmation for changewalletpassphrase, delkey and createwallet
unit tests
improved test_cli
removed uneeded test for test_websocket

Steemnoderpc
* self.errror_cnt_call used instead of local variable doRetryCount
Graphenerpc
* num_retries_call added for setting a max number of retries on a rpc call
* self.n_urls added for getting the number of given nodes
* sleep on retry removed, when switching over to the next node
self.error_cnt_call used for counting rpc call retries
rpcutils
* sleep_and_check_retries improved
Unit tests
num_retries added
test_golos reduced

Nodes can be given as ,or ; seperated string
is_connected added in steem