feat: Support ESLint 7.x (#46)

BREAKING CHANGE: Requires Node@^10.12.x || 12.x
BREAKING CHANGE: Requires ESLint@^7.x

Author: MichaelDeBoey

.travis.yml

@@ -4,6 +4,7 @@ notifications:
   email: false
 node_js:
   - 10
+  - 12.0
   - 12
   - 14
   - node

package.json

@@ -38,7 +38,7 @@
     "kcd-scripts": "^6.0.0"
   },
   "peerDependencies": {
-    "eslint": ">=6"
+    "eslint": "^7.0.0"
   },
   "eslintConfig": {
     "extends": "./node_modules/kcd-scripts/eslint.js"
@@ -49,7 +49,7 @@
     "dist"
   ],
   "engines": {
-    "node": ">=10",
+    "node": "^10.12.0 || >=12.0.0",
     "npm": ">=6",
     "yarn": ">=1"
   }