add multiprocessing and author canonicalization

.editorconfig

@@ -0,0 +1,13 @@
+# https://editorconfig.org/
+
+root = true
+
+[*.py]
+# most closely replicates what we've already been doing
+max_line_length = 99
+indent_style = space
+indent_size = 4
+insert_final_newline = true
+trim_trailing_whitespace = true
+end_of_line = lf
+charset = utf-8