JSON support for BigInt in ES6.

[Anders Rundgren]

For good or for worse I have written a proposal for https://github.com/tc39/proposal-bigint/issues/162
available at https://github.com/cyberphone/es6-bigint-json-support#json-support-for-bigint-in-es6

Since the proposal doesn't introduce a default serialization mode, I guess nobody will be happy :-(
OTOH, a fairly decent rationale for not specifying a default is also provided :-)
This comment is also worth reading: https://github.com/tc39/proposal-bigint/issues/162#issuecomment-409700859

Cheers,
Anders