ci: add initial CircleCI config

This doesn't yet handle hotfixes or cron jobs

.circleci/config.yml

@@ -0,0 +1,37 @@
+version: 2.1
+orbs:
+  node: circleci/node@5
+jobs:
+  branch-job:
+    executor: node/default # defaults to LTS
+    steps:
+    - checkout
+    - node/install-packages
+    - run: npm test
+    - run: npx commitlint --from=`git merge-base HEAD develop`
+    - run: npm run build
+  release-job:
+    executor: node/default # defaults to LTS
+    steps:
+    - checkout
+    - node/install-packages
+    - run: npm test
+    - run: npx commitlint --from='HEAD~1'
+    - run: npm run build
+    - run: npx semantic-release
+workflows:
+  version: 2
+  branch-workflow:
+    jobs:
+      - branch-job:
+          filters:
+            branches:
+              ignore:
+                - develop
+  release-workflow:
+    jobs:
+      - release-job:
+          filters:
+            branches:
+              only:
+                - develop

package.json

@@ -25,7 +25,7 @@
     "tap": "tap ./test/{unit,integration}/*.js",
     "tap:unit": "tap ./test/unit/*.js",
     "tap:integration": "tap ./test/integration/*.js",
-    "test": "npm run lint && npm run docs && npm run tap",
+    "test": "npm run lint && npm run tap",
     "watch": "webpack --progress --colors --watch",
     "version": "json -f package.json -I -e \"this.repository.sha = '$(git log -n1 --pretty=format:%H)'\""
   },