Move back to stable rust.

`maud`, which was the main reason for nightlies, relies on proc macros. Those are stable in the 2021 edition, and maud 0.23+ uses them in a stable-friendly way.

1 files changed, 0 insertions, 2 deletions

diff --git a/src/lib.rs b/src/lib.rs
index eb1da51..1f7b19a 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,4 +1,2 @@
-#![feature(proc_macro_hygiene)]
-
 pub mod twelve;
 pub mod view;