Merge pull request #11 from Navodplayer1/dev

require python 3.8+

README.md

@@ -6,7 +6,7 @@
     <a href="./LICENSE"><img src="https://img.shields.io/github/license/Navodplayer1/speechlib"></a>
     <a href="https://github.com/Navodplayer1/speechlib/releases"><img src="https://img.shields.io/github/v/release/Navodplayer1/speechlib?color=ffa"></a>
     <a href="support os"><img src="https://img.shields.io/badge/os-linux%2C%20win%2C%20mac-pink.svg"></a>
-    <a href=""><img src="https://img.shields.io/badge/python-3.7+-aff.svg"></a>
+    <a href=""><img src="https://img.shields.io/badge/python-3.8+-aff.svg"></a>
     <a href="https://github.com/Navodplayer1/speechlib/graphs/contributors"><img src="https://img.shields.io/github/contributors/Navodplayer1/speechlib?color=9ea"></a>
     <a href="https://github.com/Navodplayer1/speechlib/issues"><img src="https://img.shields.io/github/issues/Navodplayer1/speechlib?color=9cc"></a>
     <a href="https://github.com/Navodplayer1/speechlib/stargazers"><img src="https://img.shields.io/github/stars/Navodplayer1/speechlib?color=ccf"></a>