added 'GET /wallet/transactions' endpoint

[everydaycodings]

I have added the 'GET /wallet/transactions' endpoint so that delta users can see there various types of transactions going on in their wallets. (EX: pnl, deposit, withdrawal, commission, conversion, etc). To know the true power of this endpoint please refer to Delta official API documentation page

Delta endpoint source link: https://docs.delta.exchange/#get-wallet-transactions

[kiranmaya]

add this also
def get_products(self, auth=False):
response = self.request("GET", "/v2/products/" , auth=auth)
product = parseResponse(response)
return product
package is missing it .