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Expand a couple points in 1.22.0 release notes

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Simon Sapin 2017-11-21 08:37:34 +01:00 committed by GitHub
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@ -7,7 +7,8 @@ Language
- [Now accepts underscores in unicode escapes][43716]
- [`#![feature(const_fn)]` is now no longer required for
calling const functions.][43017] It's still required for creating
constant functions.
constant functions, and const functions in the standard libraries
now have individual feature gates.
- [`T op= &T` now works for numeric types.][44287] eg. `let mut x = 2; x += &8;`
- [types that impl `Drop` are now allowed in `const` and `static` types][44456]
@ -45,8 +46,8 @@ Cargo
Misc
----
- [`libbacktrace` is now available on Apple platforms.][44251]
- [Stabilised the `compile_fail` attribute for code fences.][43949] This now
lets you specify that a given code example will fail to compile.
- [Stabilised the `compile_fail` attribute for code fences in doc-comments.][43949]
This now lets you specify that a given code example will fail to compile.
Compatibility Notes
-------------------