Great implementation of the API, saves me so much work.

I need the parent ASIN to look up the parent for a variant. This is returned in the affiliate API but missing in the struct.

This is a proposal to change the response of the ItemLookupRequest.Do function when it gets a error, so that the function would always return an ItemLookupResponse object instead of a nil value as it does now.

This will fix the particular problem of calling the Do function to lookup several items in which some of them have an invalid ASIN code. In this case, Amazon will still send back the data for the "good" items, so we are losing that information by returning nil.

Hi, I added some missing attributes for vitamins.

There are some more but I think that this are enough:

        <ItemAttributes>
            <Binding>Health and Beauty</Binding>
            <Brand>Vitafusion</Brand>
            <CatalogNumberList>
                <CatalogNumberListElement>NI-083</CatalogNumberListElement>
            </CatalogNumberList>
            <EAN>0027917021348</EAN>
            <EANList>
                <EANListElement>0027917021348</EANListElement>
                <EANListElement>4600697400488</EANListElement>
                <EANListElement>4606144002625</EANListElement>
                <EANListElement>4600702030273</EANListElement>
                <EANListElement>0885810211958</EANListElement>
                <EANListElement>0027917018737</EANListElement>
                <EANListElement>0885260278402</EANListElement>
            </EANList>
            <Feature>Easy to take delicious gummy with 2000 IU vitamin D3 formula</Feature>
            <Feature>Made in the USA with natural colors and flavors</Feature>
            <Feature>Contains no wheat gluten or milk and no eggs or peanuts or soy</Feature>
            <Feature>Enjoyable alternative to pills and tablets or dry chalky vitamins</Feature>
            <Feature>Winner of ChefsBest award for best taste</Feature>
            <Feature>Assorted flavors in each bottle. Flavors may include Peach, Blackberry, Strawberry, Orange, or Lemon</Feature>
            <IsAdultProduct>0</IsAdultProduct>
            <ItemDimensions>
                <Height Units="hundredths-inches">643</Height>
                <Length Units="hundredths-inches">319</Length>
                <Weight Units="hundredths-pounds">320</Weight>
                <Width Units="hundredths-inches">319</Width>
            </ItemDimensions>
            <Label>Vitafusion</Label>
            <LegalDisclaimer>Actual product packaging and materials may contain more and/or different information than that shown on our Web site. We recommend that you do not solely rely on the information presented and that you always read labels, warnings, and directions before using or consuming a product. Content on this site is for reference purposes and is not intended to substitute for advice given by a physician, pharmacist, or other licensed health-care professional. You should not use this information as self-diagnosis or for treating a health problem or disease. Contact your health-care provider immediately if you suspect that you have a medical problem. Information and statements regarding dietary supplements have not been evaluated by the Food and Drug Administration and are not intended to diagnose, treat, cure, or prevent any disease or health condition. ABC Wholesale assumes no liability for inaccuracies or misstatements about products.</LegalDisclaimer>
            <ListPrice>
                <Amount>1049</Amount>
                <CurrencyCode>USD</CurrencyCode>
                <FormattedPrice>$10.49</FormattedPrice>
            </ListPrice>
            <Manufacturer>Vitafusion</Manufacturer>
            <Model>1102134</Model>
            <MPN>1102134</MPN>
            <NumberOfItems>1</NumberOfItems>
            <PackageDimensions>
                <Height Units="hundredths-inches">320</Height>
                <Length Units="hundredths-inches">630</Length>
                <Weight Units="hundredths-pounds">90</Weight>
                <Width Units="hundredths-inches">320</Width>
            </PackageDimensions>
            <PackageQuantity>1</PackageQuantity>
            <PartNumber>1102134</PartNumber>
            <ProductGroup>Health and Beauty</ProductGroup>
            <ProductTypeName>HEALTH_PERSONAL_CARE</ProductTypeName>
            <PublicationDate>2011-11-28</PublicationDate>
            <Publisher>Vitafusion</Publisher>
            <Size>150 Count</Size>
            <Studio>Vitafusion</Studio>
            <Title>Vitafusion Vitamin D3 Gummy Vitamins, Assorted Flavors, 150 Count</Title>
            <UPC>027917021348</UPC>
            <UPCList>
                <UPCListElement>027917021348</UPCListElement>
                <UPCListElement>027917018737</UPCListElement>
                <UPCListElement>885260278402</UPCListElement>
                <UPCListElement>885810211958</UPCListElement>
            </UPCList>
        </ItemAttributes>