__TIMESTAMP_UNIXEPOCH__ instead of useless __TIMESTAMP__?

[Steven Schveighoffer]

On 1/27/18 4:05 AM, Kagamin wrote:
> Just a numeric (long) result from `time` - more compact storage and 
> simpler implementation.

A numeric value is fine, but I would be cautious about relying on 
time(). It's not guaranteed to return 64 bits, meaning the y2k35 bug 
would affect D ;)

However, having a nice actual timestamp string may be more useful. My 
suggestion also contains the timezone, so it has more info (and this was 
a further request by the OP).

-Steve