Security: Guard against stack overflow for deeply nested input

[That3Percent]

This prevents a stack overflow when parsing deeply nested input.

The default depth is hardcoded to 50, but a non-public API allows the value to be overridden. How to surface this (eg: overloads, or an Options object) is left to the core maintainers.

[That3Percent]

I made a couple of other small changes along the way that were not necessary, and will describe the rationale here.

peek_token was renamed to take_token because typically the word peek when using a queue or similar refers to looking at what the next item is, without actually popping the item. This method does "pop" the token because the offset in the input is advanced. Because of this, I thought peek_token was confusing.

The common pattern of advancing the column, offset, and returning a token with the same length was moved into the method advance_token. This was done to avoid copy-pasting that code into the newly added branches that handle recursion.

[tailhook]

Merged. Thanks!

Do you know where 'Expected ]' comes from? This is not critical, but I think a bit weird to see in this message.

[That3Percent]

I don't know particularly where the ] comes from, but interestingly it is a continuation character that would have prevented the recursion limit from being exceeded at that position. Whatever error paradigm exists above the tokenizer is working.