[Changelog] Piston 0.2

0.2 Release 0.2

New:

 - [UI] Allow enable, disable of markdownification
 - [fix] add voter to vote()
 - [examples] add examples
 - [steem] allow to customize upvote/downvote
 - [stream/comment] for easier bots
 - [steem,piston] Add 'balance' call
 - [piston] Add piston commands for transfer, powerup and power down
 - [steem] add transfer, withdraw_vesting, transfer_to_vesting
 - [steem] Allow to provide the wif key for singing manually
 - [markdown] markdownify comments
 - [steem] allow account creation
 - [docs] initial commit for documentation
 - [classification] piston Steem is now a class of it's own
 - [read] --yaml now known as --full
 - [replies,read] Allow to show parents of a post
 - [replies] Allow for showing replies to an author's posts sorted by date

Fixes:

 - [steem] Use active key for fund related transactions
 - [steem] fix 0.5 release changes in get_posts
 - [steem] fix wallet store on no-store
 - [fix] temporary add unidecode to requirements
 - [steem] determine opening post identifier
 - [steem] don't open wallet if not needed
 - [steem] move wif argument to object
 - [Wallet] ignore FileExistsErrors
 - [steem] return signed transactions as json object
 - [piston] show signed tx as confirmation of transaction
 - [fix] edit()
 - [voter] allow for changing the voter again
 - [steem] return something (still show transactions in debug mode)
 - [argparse] remove unecessary defaults
 - [read] initial markdown implemantation for cli
 - [steem] improve account creation for additional keys/accounts
 - [wallet] simplify change of prefix for testnet
 - [fix] sanatizePermlink
 - [main] remove permlink from requirement
 - [fix] fix sanatization of parent permlink
 - [librarizatio] fine tuning for identifier vs. author/permlink
 - [librarization] move 'steem'-related stuff into steem module
 - [Refactor] start of refactoring