* The vote operation is now available at the steem object
* A vote wrapper function with the old syntax is available at comment
* The upvote and downvote at the cli (beempy) has now one argument, the weight must specified by --weight or -w

* fix Amount.amount and added Amount.amount_decimal
* Prevent that wrong reputation in a Comment API answer break the Comment object

* change the internal representation of amount from float to Decimal
* Round amount down to precision
* Adapt amount test to Decimal
* Round down all other number in all operation 

derive_permlink was improved so that replys to posts/comments with a permlink length of more than 235 characters is possible
unit tests added

* remove wss://steemd-appbase.steemit.com

* normal and appbase option for Nodelist are deprecated. 
* exclude_limited added for getting a nodelist without api.steemit.com.
* full node server added
* unit tests adapted

* Remove not working steemitdev testnet
* exclude api.steemit.com from some tests

* testnet tests disabled
* Increase version number

* unit tests added for all new functions

* Changelog adapted
* depreated witness_api for next release 0.20.6 removed

Unit test added for keygen and suggest()

* Fix test_block unittest
* Adapt Changelog for next release