Officially Support 3.9 and 3.10, too (#3)

* Officially Support 3.9 and 3.10, too

* Update pyproject.toml

* Update pyproject.toml

Author: hf-kklein

Diff for: .github/workflows/unittests.yml

@@ -9,7 +9,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        python-version: ["3.11", "3.12"]
+        python-version: ["3.9", "3.10", "3.11", "3.12"]
         os: [ubuntu-latest]
     steps:
       - uses: actions/checkout@v4

Diff for: pyproject.toml

@@ -2,7 +2,7 @@
 name = "maloident"
 description = "Model classes for the Marktlokation ID Identification API by EDI@Energy (manually fixed)"
 license = { text = "MIT" }
-requires-python = ">=3.11"
+requires-python = ">=3.9"
 authors = [{ name = "your name", email = "[email protected]" }]
 keywords = ["MaLo Ident", "Marktlokation", "BDEW", "MaLo"]
 classifiers = [
@@ -13,6 +13,8 @@ classifiers = [
     "Operating System :: OS Independent",
     "Programming Language :: Python",
     "Programming Language :: Python :: 3 :: Only",
+    "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
 ]