v2.0.0

• [BREAKING] Convert BigInt to number by default instead of ignoring these values
  If you wish to ignore these values similar to earlier versions, just use the new bigint option and set it to false.
• [BREAKING] Support ESM
• [BREAKING] Requires ES6
• Optional BigInt support
• Deterministic behavior is now optional
• The value to indicate a circular structure is now adjustable
• Significantly faster TypedArray stringification
• Smaller Codebase
• Removed stateful indentation to guarantee side-effect freeness