feat: adds publish workflow

Author: Michael Dougall

.github/workflows/npmpublish.yml

@@ -0,0 +1,58 @@
+name: Publish package
+
+on:
+  release:
+    types: [created]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v1
+
+      - name: Get yarn cache
+        id: yarn-cache
+        run: echo "::set-output name=dir::$(yarn cache dir)"
+
+      - uses: actions/cache@v1
+        with:
+          path: ${{ steps.yarn-cache.outputs.dir }}
+          key: ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-yarn-
+
+      - name: Install packages
+        run: yarn
+
+      - name: Build sources
+        run: yarn build
+
+  publish-npm:
+    needs: build
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v1
+      - uses: actions/setup-node@v1
+        with:
+          node-version: 12
+          registry-url: https://registry.npmjs.org/
+      - name: Publish to npm registry
+        run: npm publish
+        env:
+          NODE_AUTH_TOKEN: ${{secrets.npm_token}}
+
+  publish-gpr:
+    needs: build
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v1
+      - uses: actions/setup-node@v1
+        with:
+          node-version: 12
+          registry-url: https://npm.pkg.github.com/
+          scope: '@compiled'
+      - name: Publish to github registry
+        run: npm publish
+        env:
+          NODE_AUTH_TOKEN: ${{secrets.GITHUB_TOKEN}}

CHANGELOG.md

@@ -1,4 +1,4 @@
 # Change Log
 
-All notable changes to this project will be documented in this file.
-See [Conventional Commits](https://conventionalcommits.org) for commit guidelines.
+This project adheres to [Semantic Versioning 2.0](http://semver.org/).
+All release notes and upgrade notes can be found on our [Github Releases](https://github.com/compiled/css-in-js/releases) page.

package.json

@@ -19,7 +19,9 @@
     "test:cover": "jest --collectCoverage",
     "build": "tsc --module commonjs",
     "build:inspect": "node --inspect-brk node_modules/typescript/lib/tsc.js --module commonjs",
-    "build-storybook": "build-storybook"
+    "build-storybook": "build-storybook",
+    "preversion": "yarn test && yarn build",
+    "postversion": "git push && git push --tags"
   },
   "dependencies": {
     "stylis": "^3.5.4",