Add auto-version bump (#238)

* Add auto-version bump

* Add docstring

* Change where version is stored

* Add auto-publish and bump correct file

Author: jacobbieker

.bumpversion.cfg

@@ -0,0 +1,8 @@
+[bumpversion]
+commit = True
+tag = True
+current_version = 0.2.1
+
+[bumpversion:file:setup.py]
+search = version="{current_version}"
+replace = version="{new_version}"

.github/workflows/publish.yaml

@@ -0,0 +1,66 @@
+name: Bump version and auto-release
+on:
+  push:
+    branches:
+      - main
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    outputs:
+      new_tag: ${{ steps.bumper.outputs.new_ver }}
+    steps:
+      - uses: actions/checkout@v2
+      - name: Bump version
+        id: bumper
+        uses: jaumann/github-bumpversion-action@v0.0.7
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      - name: Push changes
+        uses: ad-m/github-push-action@master
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          tags: true
+
+  release:
+    needs: [build]
+    runs-on: ubuntu-latest
+    steps:
+      - run: echo ${{needs.build.outputs.new_tag}}
+      - name: Changelog
+        uses: scottbrenner/generate-changelog-action@master
+        id: Changelog
+        env:
+          REPO: ${{ github.repository }}
+      - name: Create Release
+        id: create_release
+        uses: actions/create-release@latest
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          tag_name: ${{ needs.build.outputs.new_tag }}
+          release_name: v${{ needs.build.outputs.new_tag }}
+          body: |
+            ${{ steps.Changelog.outputs.changelog }}
+          draft: false
+          prerelease: false
+
+  publish:
+    needs: [release]
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: "3.x"
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install build
+      - name: Build package
+        run: python -m build
+      - name: Publish package
+        uses: pypa/gh-action-pypi-publish@27b31702a0e7fc50959f5ad993c78deac1bdfc29
+        with:
+          user: __token__
+          password: ${{ secrets.PYPI_API_TOKEN }}