chore: Nightly feature is not needed now

jhg · jhg · commit 62c22d76ad2a · 2023-04-22T22:34:48.000+02:00
diff --git a/src/lib.rs b/src/lib.rs
@@ -1,4 +1,3 @@
-#![feature(extended_key_value_attributes)]
 #![doc = include_str!("../README.md")] // This also allow to run examples in that file.
 #![allow(unsafe_code)]
 #![warn(missing_docs)]

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,3 @@`
`1`		`-#![feature(extended_key_value_attributes)]`
`2`	`1`	`#![doc = include_str!("../README.md")] // This also allow to run examples in that file.`
`3`	`2`	`#![allow(unsafe_code)]`
`4`	`3`	`#![warn(missing_docs)]`