v3.0.0-beta.1

Tracking: #131

• Better testing with tsd
• #103
  • Normal usage
  • Preview features
  • Strings for type literals
  • Enum support
  • More types?
• #112
  • Added allowAny option
• #117
  • Support with ![<literal>] syntax
  • Testing with Json? and Json[] types.
• Removed unused async code.
• Better error handling & support to partial generation.
• README rewrite (Help wanted here 😅)
  • Normal usage
  • Arrays and optional
  • Literal types
  • Configuration example
  • Fix types