New in minor release v2.7.0

Breaking API change

• [#319] GetImageBlob and GetImagesBlob signatures have been updated to return an error as the second element. This is needed to correct a fault in the original implementation which was masking and clearing errors, making it hard to debug, as a user. In an effort to be more idiomatic, it was better to adjust the signature and guarantee to the user that we will return a related error instead of expecting them to check the byte slice for nil and then call GetLastError