fix: year check

[pixel365]

RFC 6265, Page 15

[SergioBenitez]

I don't think we should do this, at least not this way, as doing so would mean we fail to parse the entire cookie if the date is < 1601, which would violate the spec (only the expires / date field should fail to parse).

The question of whether the date should or shouldn't parse if the year is < 1601 is a tricky one. Obviously according to the spec, it should fail to parse. Chrome, however, allows it and returns a "minimal time". Firefox accepts it. The jshttp/cookie library also parses it just fine (using the browser's Date). In short, we'd be doing something quite different from the norm, and I suspect we'd break a few things.

The fix to offset is correct, however.

[SergioBenitez]

Correct fixes merged in ff615ab.