Specify Python versions supported

Author: ftomassetti

.github/workflows/pythonapp.yml

@@ -6,7 +6,7 @@ jobs:
   build:
     strategy:
       matrix:
-        python: [ '3.8', '3.9', '3.10', '3.11', '3.12', '3.13' ]
+        python: [ '3.9', '3.10', '3.11', '3.12', '3.13' ]
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4

README.md

@@ -6,6 +6,10 @@
 
 Pylasu is an AST Library in the [StarLasu](https://github.com/Strumenta/StarLasu) family, targeting the Python language. [Documentation](https://pylasu.readthedocs.io) is on Read the Docs.
 
+## Requirements
+
+Python 3.8 to 3.13 are supported.
+
 ## Linting
 
 ```shell