chore(package): add script test:ci; update husky, travis, publish

`npm run test:ci` passes option `--ci` to `npm test`, which fails
the test if a new snapshot is encountered.

Author: remarkablemark

.huskyrc.json

@@ -1,6 +1,6 @@
 {
   "hooks": {
     "commit-msg": "commitlint -E HUSKY_GIT_PARAMS",
-    "pre-commit": "npm run lint:dts && npm test && lint-staged"
+    "pre-commit": "npm run lint:dts && npm run test:ci && lint-staged"
   }
 }

.travis.yml

@@ -8,7 +8,7 @@ script:
   - npx commitlint --from=HEAD~1
   - npm run lint
   - npm run lint:dts
-  - npm test
+  - npm run test:ci
   - npm run build
   - npm run benchmark
 after_success:

package.json

@@ -11,9 +11,10 @@
     "lint": "eslint --ignore-path .gitignore --ignore-pattern /examples/ .",
     "lint:dts": "dtslint .",
     "lint:fix": "npm run lint -- --fix",
-    "prepublishOnly": "npm run lint && npm run lint:dts && npm test && npm run clean && npm run build",
+    "prepublishOnly": "npm run lint && npm run lint:dts && npm run test:ci && npm run clean && npm run build",
     "release": "standard-version --no-verify",
     "test": "jest --coverage",
+    "test:ci": "npm test -- --ci",
     "test:watch": "npm test -- --watch"
   },
   "repository": {