roll back changes

Author: vpetersson

rustfmt.toml

@@ -1,7 +1,6 @@
-# Note: These options require nightly rustfmt (`cargo +nightly fmt`)
-# On stable, they are ignored with warnings. Uncomment to use with nightly.
-# group_imports = "StdExternalCrate"
-# imports_granularity = "Module"
-# unstable_features = true
-# format_generated_files = false
-# ignore = ["furiousfilter/**"]
+group_imports = "StdExternalCrate"
+imports_granularity = "Module"
+unstable_features = true
+format_generated_files = false
+
+ignore = ["furiousfilter/**"]