title: Cryptopia API getting bad request for Sell
body: <pre><code>def sell():
      #Market: The market symbol of the trade e.g. 'DOT/BTC' (not required if 'TradePairId' supplied)
      #TradePairId: The Cryptopia tradepair identifier of trade e.g. '100' (not required if 'Market' supplied)
      #Type: the type of trade e.g. 'Buy' or 'Sell'
      #Rate: the rate or price to pay for the coins e.g. 0.00000034
     #Amount: the amount of coins to buy e.g. 123.00000000
     #SubmitTrade', {'Market': Market, 'Type': Type, 'Rate': Rate, 'Amount': Amount
      c = cryptopia(key,secret)
      c.SubmitTrade('CHC/BTC','Sell','1','.1')
  </code></pre>
  
  <p>So, in this i'm trying to sell .1 chc for 1 btc I'm using this wrapper for the api <a href="https://pastebin.com/nL089zwF" rel="nofollow noreferrer">https://pastebin.com/nL089zwF</a>. When I run the current method I get <code>( Response ): {"Success":false,"Error":"Bad Request","Data":null}</code> 
  Thank you.</p>