Automate versioning process (#67)

* Automate versioning using labels

.github/pull_request_template.md

@@ -0,0 +1,7 @@
+## Description
+
+Add a short description of the change. If this is related to an issue, please add a reference to the issue.
+
+## CHANGELOG
+
+* [CHANGED] Describe your change here. Look at CHANGELOG.md to see the format.

.github/workflows/prepare.yml

@@ -0,0 +1,34 @@
+name: Prepare release
+
+on:
+  pull_request:
+    types: [ labeled ]
+    branches:
+      - master
+
+jobs:
+  prepare-release:
+    name: Prepare release
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Get current version
+        run: |
+          CURRENT_VERSION=$(yq '.version' pubspec.yaml)
+          echo "CURRENT_VERSION=$CURRENT_VERSION" >> $GITHUB_ENV
+      - uses: actions/checkout@v2
+        with:
+          repository: pusher/public_actions
+          token: ${{ secrets.PUSHER_CI_GITHUB_PRIVATE_TOKEN }}
+          path: .github/actions
+      - uses: ./.github/actions/prepare-version-bump
+        id: bump
+        with:
+          current_version: ${{ env.CURRENT_VERSION }}
+      - name: Push
+        shell: bash
+        run: |
+          echo "$(yq '.version = "${{ steps.bump.outputs.new_version }}"' pubspec.yaml)" > pubspec.yaml 
+          git add pubspec.yaml CHANGELOG.md
+          git commit -m "Bump to version ${{ steps.bump.outputs.new_version }}"
+          git push

pubspec.yaml

@@ -4,23 +4,19 @@ version: 2.0.1
 homepage: https://github.com/pusher/pusher-channels-flutter
 repository: https://github.com/pusher/pusher-channels-flutter
 issue_tracker: https://github.com/pusher/pusher-channels-flutter/issues
-
 environment:
   sdk: ">=2.12.0 <3.0.0"
   flutter: ">=1.20.0"
-
 dependencies:
   flutter:
     sdk: flutter
   flutter_web_plugins:
     sdk: flutter
   js: ^0.6.3
-
 dev_dependencies:
   flutter_test:
     sdk: flutter
   flutter_lints: ^1.0.4
-
 # For information on the generic Dart part of this file, see the
 # following page: https://dart.dev/tools/pub/pubspec
 
@@ -41,34 +37,32 @@ flutter:
       web:
         pluginClass: PusherChannelsFlutterWeb
         fileName: pusher_channels_flutter_web.dart
-
-  # To add assets to your plugin package, add an assets section, like this:
-  # assets:
-  #   - images/a_dot_burr.jpeg
-  #   - images/a_dot_ham.jpeg
-  #
-  # For details regarding assets in packages, see
-  # https://flutter.dev/assets-and-images/#from-packages
-  #
-  # An image asset can refer to one or more resolution-specific "variants", see
-  # https://flutter.dev/assets-and-images/#resolution-aware.
-
-  # To add custom fonts to your plugin package, add a fonts section here,
-  # in this "flutter" section. Each entry in this list should have a
-  # "family" key with the font family name, and a "fonts" key with a
-  # list giving the asset and other descriptors for the font. For
-  # example:
-  # fonts:
-  #   - family: Schyler
-  #     fonts:
-  #       - asset: fonts/Schyler-Regular.ttf
-  #       - asset: fonts/Schyler-Italic.ttf
-  #         style: italic
-  #   - family: Trajan Pro
-  #     fonts:
-  #       - asset: fonts/TrajanPro.ttf
-  #       - asset: fonts/TrajanPro_Bold.ttf
-  #         weight: 700
-  #
-  # For details regarding fonts in packages, see
-  # https://flutter.dev/custom-fonts/#from-packages
+# To add assets to your plugin package, add an assets section, like this:
+# assets:
+#   - images/a_dot_burr.jpeg
+#   - images/a_dot_ham.jpeg
+#
+# For details regarding assets in packages, see
+# https://flutter.dev/assets-and-images/#from-packages
+#
+# An image asset can refer to one or more resolution-specific "variants", see
+# https://flutter.dev/assets-and-images/#resolution-aware.
+# To add custom fonts to your plugin package, add a fonts section here,
+# in this "flutter" section. Each entry in this list should have a
+# "family" key with the font family name, and a "fonts" key with a
+# list giving the asset and other descriptors for the font. For
+# example:
+# fonts:
+#   - family: Schyler
+#     fonts:
+#       - asset: fonts/Schyler-Regular.ttf
+#       - asset: fonts/Schyler-Italic.ttf
+#         style: italic
+#   - family: Trajan Pro
+#     fonts:
+#       - asset: fonts/TrajanPro.ttf
+#       - asset: fonts/TrajanPro_Bold.ttf
+#         weight: 700
+#
+# For details regarding fonts in packages, see
+# https://flutter.dev/custom-fonts/#from-packages