message: Update gl_generator, cgmath, image
diff: @@ -46,11 +46,11 @@ smallvec = "0.6"
  fnv = "1.0.5"
  [build-dependencies]
  -gl_generator = "0.10"
  +gl_generator = "0.11"
  [dev-dependencies]
  -cgmath = "0.16"
  +cgmath = "0.17"
  genmesh = "0.6"
  -image = "0.20"
  +image = "0.21"
  obj = { version = "0.9", features = ["genmesh"] }
  rand = "0.6"
  