Documentation correction

[beached]

Slight correction to https://github.com/ijl/orjson#int The first sentence "JSON only requires that implementations accept integers with 53-bit precision" is not correct. JSON places no restrictions on the scale of number types but allows for reasonable limits. The 53 bit limit is a result of JavaScript using double for the representation of numbers.

[ijl]

Ok, thanks, sort of fixed now.

[beached]

One option when encoding larger than 53 bit numbers is to make them strings. It's not for all cases, but it's pretty common too I think. Then a BigInt in javascript can use it, many browsers have it as part of the lang now https://caniuse.com/bigint

[ijl]

I suppose someone could propose a solution for bigints in #116.