stellar/stellar-client — pull request #807 by deckar01 (2014-09-13 00:47:25+00:00)
Title: Fix trading quirks

Multiply with BigNumber to prevent errors.
Clear the order book for invalid currency pairs (same fix I added to /trade to clear the orders table when the pair is invalid).
Delete the currency's issuer if it is undefined/falsy (```_.isEqual({currency: 'STR'}, {currency: 'STR', issuer: undefined}) // => false```)