Rust 1.26.1

Tools

• RLS now works on Windows.
• Rustfmt stopped badly formatting text in some cases.

Compatibility Notes

• fn main() -> impl Trait no longer works for non-Termination trait. This reverts an accidental stabilization.
• NaN > NaN no longer returns true in const-fn contexts.
• Prohibit using turbofish for impl Trait in method arguments.