chore(git): add commitizen and commitlint

Author: f2prateek

package.json

@@ -15,15 +15,9 @@
     "lint": "eslint \"./{lib,test}/**/*.js\"",
     "format": "prettier-eslint --write --list-different \"./{lib,test}/**/*.{js,json,md}\"",
     "precommit": "lint-staged",
-    "np": "np --no-publish"
-  },
-  "lint-staged": {
-    "linters": {
-      "*.{js,json,md}": [
-        "prettier-eslint --write",
-        "git add"
-      ]
-    }
+    "np": "np --no-publish",
+    "cz": "git-cz",
+    "commitmsg": "commitlint -E GIT_PARAMS"
   },
   "repository": {
     "type": "git",
@@ -73,13 +67,17 @@
     "uuid": "^2.0.2"
   },
   "devDependencies": {
+    "@commitlint/cli": "^7.0.0",
+    "@commitlint/config-conventional": "^7.0.1",
     "@segment/analytics.js-integration": "^3.2.1",
     "@segment/eslint-config": "^4.0.0",
     "browserify": "13.0.0",
     "browserify-istanbul": "^2.0.0",
     "codecov": "^3.0.2",
+    "commitizen": "^2.10.1",
     "compat-trigger-event": "^1.0.0",
     "component-each": "^0.2.6",
+    "cz-conventional-changelog": "^2.1.0",
     "eslint": "^4.19.1",
     "eslint-config-prettier": "^2.9.0",
     "eslint-plugin-mocha": "^5.0.0",
@@ -107,5 +105,23 @@
     "sinon": "^1.7.3",
     "snyk": "^1.83.0",
     "watchify": "^3.7.0"
+  },
+  "commitlint": {
+    "extends": [
+      "@commitlint/config-conventional"
+    ]
+  },
+  "lint-staged": {
+    "linters": {
+      "*.{js,json,md}": [
+        "prettier-eslint --write",
+        "git add"
+      ]
+    }
+  },
+  "config": {
+    "commitizen": {
+      "path": "cz-conventional-changelog"
+    }
   }
 }