Support for 64 bit timestamps

[toddgaunt]

I'd like to be able to use signed 64 bit unix timestamps but unfortunately this tool only supports 32 bit timestamps which means the maximum allowed timestamp is 2147483647 or 03:14:07 January 19th 2038.

This tool would be more useful if it defaulted to 64 bit signed timestamps to allow timestamps further in the future, and to support timestamps in the past represented by negative values. Additionally it would be good to improve error handling if the integer value provided overflows. Currently it simply overflows the year to 1970.

If this seems like a desirable feature to any maintainers of this project, I'd be happy to develop it and submit a PR to make the change.

Screenshot of the maximum supported value:

And then after pressing '+' the value overflows to the epoch year:

[aleiepure]

This was already partially addressed in the past (#105), and I agree that full 64-bit support would be beneficial.

I appreciate the offer to help with a PR, but the current Python codebase is on hold due to #123. Given the importance of this issue, I’ll definitely keep it in mind when reworking the timestamp tool as part of the rewrite.

[toddgaunt]

@aleiepure I wasn't aware, thanks for the information and good luck with the rewrite! This tool is pretty amazing and I use it everyday so I'm excited to see where it goes.