make use of clippy config

Stephan Dilly · Stephan Dilly · commit 4b107be7befd · 2021-02-27T17:49:22.000+01:00
diff --git a/.clippy.toml b/.clippy.toml
@@ -0,0 +1,2 @@
+msrv = "1.50.0"
+cognitive-complexity-threshold = 18

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,2 @@`
	`1`	`+msrv = "1.50.0"`
	`2`	`+cognitive-complexity-threshold = 18`