modify arguments based on installed version of asdf

changelog/422.trivial.rst

@@ -1 +1 @@
-replace usages of ``copy_arrays`` with ``memmap``
+replace usages of ``copy_arrays`` with ``memmap`` for ``asdf>=3.1.0``

dkist/dataset/loader.py

@@ -1,4 +1,5 @@
 import importlib.resources as importlib_resources
+import importlib.metadata
 from pathlib import Path
 from functools import singledispatch
 
@@ -155,8 +156,12 @@ def _load_from_asdf(filepath):
     base_path = filepath.parent
     try:
         with importlib_resources.as_file(importlib_resources.files("dkist.io") / "level_1_dataset_schema.yaml") as schema_path:
+            if tuple(int(part) for part in importlib.metadata.version("asdf").split(".")) >= (3, 1, 0):
+                kwargs = {"memmap": False}
+            else:
+                kwargs = {"copy_arrays": True}
             with asdf.open(filepath, custom_schema=schema_path.as_posix(),
-                           lazy_load=False, memmap=False) as ff:
+                           lazy_load=False, **kwargs) as ff:
                 ds = ff.tree["dataset"]
                 if isinstance(ds, TiledDataset):
                     for sub in ds.flat: