Add editorconfig to improve formatting consistency
diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000..a3284ca
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,9 @@
+root = true
+
+[*]
+end_of_line = lf
+insert_final_newline = true
+charset = utf-8
+indent_style = space
+indent_size = 4
+max_line_length = 120