Avoid binaryornot 0.4.3 and chardet 3.0.0 for the time being
    
    This because that specific version requires chardet 3.0.2 or higher
    while it still works on lower than 3.0.0
    https://github.com/audreyr/binaryornot/commit/c730478fa3f76a02421251e146181af76182b006
    
    So avoid these two specific versions for the time being