Merge #1094

1094: Update version number in Readme r=cuviper a=atouchet



Co-authored-by: Alex Touchet <alextouchet@outlook.com>

Author: bors[bot]

README.md

@@ -71,7 +71,7 @@ as:
 
 ```toml
 [dependencies]
-rayon = "1.7"
+rayon = "1.8"
 ```
 
 To use the parallel iterator APIs, a number of traits have to be in