Blockchainobject
* auto_clean function added. Everytime a new item is stored into the cache, all expired elements are removed.
* The __contains__ function sets now data ot None, when the date is expired, in order to reduce memory consumption
CLI
* threading for pingnode added. with --threading, all nodes are tested simultanously.
Steemnoderpc
* Error count and exception improved when only one node is available
Graphenerpc
* regests.session is stored as signelton
* requests_retry_session removed
* shared_session_instance and set_session_instance is used to get and set the global request.session object
* create_ws_instance added; A websocket is created everytime and the singleton is removed
* error_cnt and num_retries_call handling improved
RpcUtils
* sleep_and_check_retries improved
Examples
* benchmark_node2 uses threads (one thread for each node)
* memory_profiler2 added to check memory consumption for creating multiple account objects
Unit tests
* test for objectcache improved

Improved documentation

Added Use nobroadcast for testing and Clear BlockchainObject Caching

Unit tests fixed

* configuration improved
* beempy help for each command added

* Renamed getSimilarAccountNames to get_similar_account_names
* Fix doctest for account, profile, steem and utils

Layout of the doc improved in blockchain, discussions, steem, transactionbuilder, websocket
New content added to quickstart and tutorial

Account
* Examples and Dokumentation improved
Amount
* Example improved
Asciichart
* Examples improved
Blockchain
* examples improved
Discussions
* Doku improved
Market
* Examples and Doku improved
Price
* Examples improved
* Missing steem_instance fixed
Steem
* Example code fixed
Graphenerpc
* Example improved

Formatting of all doc parts improved
Logo and icon added
Doc structure improved
quickstart improved

Account
* Example forget SimilarAccountNames  added
* Example for history and history_reverse improved
Amount
* Example is tested with doctest
Block
* Example is tested with doctest
Price
* Fix example
Profile
* Fix example
Steem
* Example is tested by doctest
Transactionbuilder
* Example is tested by doctest
Vote
* datetime.now() changed to datetime.utcnow()
* Example is tested by doctest
Witness
* datetime.now() changed to datetime.utcnow()
* Example is tested by doctest
Docs
* Installation instruction improved
* Quickstart created
* Discord channel added to support

Fix wallet unlock when using keyring

steem
* add option use_condenser
steemnoderpc
* refactoring
Graphenerpc
* condenser_api calls shen use_condenser=True is set.
unit tests
* test_comment and test_discussion uses 19.4 nodes now

Asciichart
* added ascii charset for python 2.7
CLI
* adapted to new charset

Comment set to full as default
Unit tests for cli and comment improved.

Change to fix Issue #4

Memo
* make prefix changeble
Transationbuilder
* sign() return the signed struct now
Graphenerpc
* Session are used for requests
* Singleton for websocket instance added
* Both measures reduce ram consumption when more than one Steem object is created.
Add missing scrypt package to dependency

cli
* nodes can be sorted by ping times with pingnode --sort
* nodes with error can be removed by pingnode --sort --remove
* add wipe option for createwallet