Removed CONSTANT from Q_PROPERTY definitions of Item and Account. Moved qHash() into correct namespace. Adjusted hash() and qHash() of Item to also combine with the account hash. Adjusted operator==() and operator<() of Item to compare equal or less than only if the accounts also compare equal or less than. make_test_account() trailing arguments are now defaulted, so we don't need an overload. Chained the RuntimeImpl constructors.