Stop using outdated feature gates

src/lib.rs

@@ -1,4 +1,4 @@
-#![feature(fn_traits, get_type_id, unboxed_closures, use_extern_macros)]
+#![feature(fn_traits, get_type_id, unboxed_closures)]
 
 //! Mocking framework for Rust (currently only nightly)
 //!
@@ -38,7 +38,7 @@
 //! Enable procedural macros in crate root:
 //!
 //! ```
-//! #![cfg_attr(test, feature(proc_macro_mod, use_extern_macros))]
+//! #![cfg_attr(test, feature(proc_macro_hygiene))]
 //! ```
 //! Import Mocktopus:
 //!

tests/injecting.rs

@@ -1,4 +1,4 @@
-#![feature(const_fn, proc_macro_gen, proc_macro_mod, use_extern_macros)]
+#![feature(const_fn, proc_macro_hygiene)]
 
 // Test if injecting works even if mocktopus is aliased
 extern crate mocktopus as mocktopus_aliased;

tests/injecting_no_std.rs

@@ -1,4 +1,3 @@
-#![feature(use_extern_macros)]
 #![no_std]
 
 extern crate mocktopus;

tests/mocking.rs

@@ -1,5 +1,3 @@
-#![feature(use_extern_macros)]
-
 extern crate mocktopus;
 
 mod mocking_fns;