Merge pull request freqtrade#953 from freqtrade/release-0.17.0

Release 0.17.0

Freqtrade 0.16.1 release

Note. This is the last release that uses our own bittrex implementation
      for trading. After this ccxt library will be taken into use which
      will offer the needed exchanges (bittrex/binance)

Freqtrade 0.16.0 release

Merge pull request freqtrade#375 from gcarq/update_version

Update freqtrade version

testdata path to use os.path.join (freqtrade#360)