Release v1.3.0

• Refactor build process
• Migrate from Travis CI to GitHub Actions
• Revamp README.md into three files: README.md, CHANGELOG.md, and LICENSE
• Expose BrowserLogger and NodeLogger
• Improve Node or browser detection
• Refactor to template strings
• Update all dependencies
• Refactor tsconfig.json for flexibility
  • Allow tests to keep comments when transpiled through ts-node
    • This fixes an issue with transpiling, comments, and coverage - see istanbuljs/nyc#1274 (comment)