Remove MANIFEST.in and update to Python 3.10-3.14

- Remove obsolete MANIFEST.in file (now using hatchling)
- Update Python classifiers to 3.10-3.14
- Update GitHub Actions workflows to test Python 3.10-3.14
- Remove PyPy from workflows

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: rnixx

.github/workflows/test.yml

@@ -16,13 +16,11 @@ jobs:
           - macos-latest
 
         python:
-          - "3.8"
-          - "3.9"
           - "3.10"
           - "3.11"
           - "3.12"
           - "3.13"
-          - "pypy3.9"
+          - "3.14"
 
     steps:
       - uses: actions/checkout@v4

MANIFEST.in

@@ -17,10 +17,11 @@ classifiers = [
     "Operating System :: OS Independent",
     "Topic :: Software Development",
     "Programming Language :: Python",
-    "Programming Language :: Python :: 2.7",
-    "Programming Language :: Python :: 3.7",
-    "Programming Language :: Python :: 3.8",
-    "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
+    "Programming Language :: Python :: 3.14",
     "Programming Language :: Python :: 3.10",
 ]
 dependencies = [
@@ -40,7 +41,6 @@ test = [
 [project.urls]
 Homepage = "http://github.com/conestack/node"
 
-
 [tool.hatch.build.targets.wheel]
 packages = ["src/node"]
 [tool.zest-releaser]