fix: Update to latest @typescript-eslint

[iamturns]

Includes support for latest TypeScript version.

Fixes #53.

BREAKING CHANGE 1

New rules require type information from your tsconfig.json file.

You must set parserOptions.project within your ESLint config file.

Example ESLint config:

module.exports = {
  extends: ['airbnb-typescript'],
  parserOptions: {
    project: './tsconfig.json'
  }
}

BREAKING CHANGE 2

You must upgrade your local dependency of @typescript-eslint/eslint-plugin to 2.19.0.

Example command: npm install @typescript-eslint/eslint-plugin@^2.19.0 --save-dev.

[iamturns]

🎉 This PR is included in version 7.0.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot 📦🚀

[viT-1]

Why with 7.0.0 I should include all dev scripts (package.json, etc) (which I want to lint) into tsconfig?

My lint command in package.json scripts:
tsc --project ./src/tsconfig.dev.json --noEmit && eslint **/*.{ts,json,js} *.* .*.js

#68