Merge pull request #291 from tryolabs/3.7-may-work

Comment that norfair might still work with python 3.7

Author: aguscas

README.md

@@ -35,7 +35,7 @@ Norfair is built, used and maintained by [Tryolabs](https://tryolabs.com).
 
 ## Installation
 
-Norfair currently supports Python 3.8+. The last version to support Python 3.7 was [Norfair 2.2.0](https://github.com/tryolabs/norfair/releases/tag/v2.2.0).
+Norfair currently supports Python 3.8+. The latest tested version to support Python 3.7 is [Norfair 2.2.0](https://github.com/tryolabs/norfair/releases/tag/v2.2.0). Later versions may work, but no specific support is planned.
 
 For the minimal version, install as: