Bump to 3.8

Author: cbrnr

pyproject.toml

@@ -9,7 +9,7 @@ description = "The WFDB Python package: tools for reading, writing, and processi
 authors = [{name = "The Laboratory for Computational Physiology", email = "contact@physionet.org"}]
 license = {text = "MIT License"}
 readme = "README.md"
-requires-python = ">= 3.7.1"
+requires-python = ">= 3.8"
 dependencies = [
     "numpy >= 1.10.1, < 2.0.0",
     "scipy >= 1.0.0",