Stock Checker for Amazon

此版本中的新功能：*** NOTE: I have had to reduce the minimum frequency of stock checks as I am exceeding the maximum hourly checks allowed by Amazon, which is causing ALL users to get incorrect/no check results. I am reviewing possible solutions for this, apologies *** ** New in 1.10 ** 1) Quick fix for Amazon API change, investigating better long term fix 2) Fix for java.lang.IllegalArgumentException 3) Fix for error.