- Use a singleton pool to prevent lengthy restarts of the pool, this also means that arguments for pool size have gone.

- Removed qbar and TqdmMeter.
- Wrap chunked function for better error messages.

.github/workflows/pytest.yml

@@ -0,0 +1,22 @@
+name: PyTest
+
+on: [push, pull_request]
+
+jobs:
+  pytest:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        python-version: ["3.10"]
+        os: [ubuntu-20.04, windows-2019, macOS-11]
+
+    steps:
+      - uses: actions/checkout@v3
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Install
+        run: pip install .[test]
+      - name: Test with pytest
+        run: pytest