Feature/ jsonc

[Sykander]

It'd be great if this project supported jsonc. :)

Changes

• Added option jsonc which when set true will do the following:
• Add support for jsonc containing code comments like // or /* ... */ (which is treated as whitespace)
• Add support for jsonc containing trailing commas

Description of Changes

I added a new function called parseComment in the style of the other parseObject, parseArray, parseXXX functions, which reads through code comments as whitespace when jsonc option is enabled.

When called this function parses through the source until it finds a valid comment termination and then returns to the original whitespace function to continue parsing whitespace.

I also adjusted parseObject and parseArray to allow for trailing commas if and only if jsonc option is enabled.