Cassandre trading bot 5.0.1 released

• We are now live testing three exchanges with real assets (Kucoin, Coinbase & Binance).

• XChange 5.0.9 (with coinbase market order fix).

• Binance rate limit excess exception fixed.

• Improved speed of Dry mode.

• In dry mode, change closing order price to position rules to have an accurate report.

• During backtesting with positions, the first calculation gain is sometimes false.
  In archetypes, uses a simulated exchange for tests (to avoid kucoin 403 errors).