Add support for gunziped file to animate

olaflow/processing/animate.py

@@ -27,7 +27,9 @@ config.read(args.config)
 out = pathlib.Path(config.get("post", "out"))
 out.mkdir(parents=True, exist_ok=True)
 
-with gzip.open(out.joinpath("pickle.gz"), "rb") as f:
+with gzip.open(gzf, "rb") if (
+    gzf := out.joinpath("pickle.gz")
+).exists() else gzf.with_suffix("").open("rb") as f:
     model = pickle.load(f)
 
 x0 = config.getfloat("post", "x")