message: bump image crate to 0.20.1
diff: @@ -38,7 +38,7 @@ gfx_glyph = "0.12"
  gfx_window_glutin = "0.27"
  glutin = "0.19"
  winit = { version = "0.18", features = ["icon_loading"] }
  -image = {version = "0.19", default-features = false, features = ["gif_codec", "jpeg", "ico", "png_codec", "pnm",
  +image = {version = "0.20.1", default-features = false, features = ["gif_codec", "jpeg", "ico", "png_codec", "pnm",
  "tga", "tiff", "webp", "bmp", "dxt", ] }
  rodio = "0.8"
  serde = "1"
  