v0.16.1

• Improved Multipart support with more info on parsed files. parse_multipart(env) now yields
  an UploadFile object which has the following properties field,data,meta,`headers.

post "/upload" do |env|
  parse_multipart(env) do |f|
    image1 = f.data if f.field == "image1"
    image2 = f.data if f.field == "image2"
    puts f.meta
    puts f.headers
    "Upload complete"
  end
end