Merge #672

672: move the msrv configuration from 'clippy.toml' to 'Cargo.toml' r=jswrenn a=danieleades

what it says on the tin.

The MSRV can now be set in Cargo.toml rather than clippy.toml. Clippy parses the field from Cargo.toml.

This has the added advantage that if you try to compile this crate with a toolchain older than the MSRV you'll get a nicer error message. Or you *would* if the MSRV wasn't so old that it doesn't make use of the `rust-version` key...

still, it's the thought the counts. This change is future-proof, and is also backwards compatible, since unrecognised keys cause warnings, but not errors.

Co-authored-by: Daniel Eades <danieleades@hotmail.com>

Cargo.toml

@@ -16,6 +16,8 @@ exclude = ["/bors.toml"]
 
 edition = "2018"
 
+rust-version = "1.36.0"
+
 [package.metadata.release]
 no-dev-version = true