chore: support eslint 6.8 and 7 (#77)

* chore: support eslint 6.8 and 7

* only test after updating lint

* fixed typo

Author: benmonro

.travis.yml

@@ -11,6 +11,8 @@ node_js:
 install: npm install
 script:
   - npm run validate
+  - npm i -D eslint@7
+  - npm run test -- --no-watch
   - npx codecov@3
 branches:
   only:

package.json

@@ -35,11 +35,12 @@
     "requireindex": "^1.2.0"
   },
   "devDependencies": {
+    "eslint": "6.8",
     "jest-extended": "^0.11.5",
     "kcd-scripts": "^6.0.0"
   },
   "peerDependencies": {
-    "eslint": "^7.0.0"
+    "eslint": ">=6.8"
   },
   "eslintConfig": {
     "extends": "./node_modules/kcd-scripts/eslint.js",