Switched to spooled tmpfile

swash/processing/read_swash.py

@@ -14,7 +14,7 @@ class ReadSwash:
 
     @classmethod
     def read_nohead(cls, path):
-        with tempfile.TemporaryFile() as tmpfile:
+        with tempfile.SpooledTemporaryFile() as tmpfile:
             with open(path) as file:
                 subprocess.run(("tr", "-d", "\n"), stdin=file, stdout=tmpfile)
             tmpfile.seek(0)