Bts-tools

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* deactivated GOLD and SILVER feed publishing (issue with Yahoo)

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* API CHANGE: complete rework of the configuration system, please delete
your old config.yaml file if you have any
* added full support for Steem, including feed publishing
* added feed publishing for BTS assets: TUSD, CASH.USD, CASH.BTC, ALTCAP
* added monitoring plugin that checks on the amount of free disk space
* fixed missed block notification for Graphene clients
* logs are now also present as rotating logfiles in the ~/.bts_tools folder

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* added support for publishing TCNY feed; generally more robust feeds fetching/publishing
* renamed 'bts2' commandline tool to 'bts'. 'bts2' still working for convenience,
old 'bts' is still available as 'bts1'.
* change in the config.yaml format: https://github.com/wackou/bts_tools/commit/24e962820775a8a23e0b45d26c501aa7e723ff64

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* NOTE: requires the latest version (v2.0.151209) of the BitShares witness client
* better integration with the websocket event loop
* network views available again
* overall lots of minor fixes and general stability improvements

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* interim release that fixes feed for CNY markets

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* support for Muse clients
* better feeds script. Process is now the following:
- get the BTS/BTC valuation from Poloniex, CCEDK, Bter, Btc38 (configurable)
- get the BTC/USD valuation from BitcoinAverage, with fallback on Bitfinex and Bitstamp
- get the BTS valuation in other fiat currencies using Yahoo forex rates
- get market indices using Yahoo, Google, Bloomberg (configurable)
* can specify 'boost_root' option in build environment in config.yaml
* minor bugfixes everywhere