Log Message:
www/hs-wai: Update to 3.2.4

3.2.4

    Add helpers for modifying request headers: modifyRequest and \ 
mapRequestHeaders. #710 #952
    Small documentation adjustments like adding more @since markers. #952
    Add setRequestBodyChunks to mirror getRequestBodyChunk and avoid deprecation \ 
warnings when using requestBody as a setter. #949
    Overhaul documentation of Middleware. #858