I've been reading std.datetime documentation backwards and forwards, but
if the information is there, I've been missing it.
How do I get the current time as a long?
Clock.currTime() returns a SysTime, and while currently I can convert
that to a long, this is because I looked into the code. What's the
supported way? All the documentation seems to be based around auto,
which is great if you don't need to store it in memory with a defined
number of bits allocated...but lousy if you do. (E.g., I don't want to
store a time zone, just the UTC time.
What I'm looking for is the opposite of the "FromUnixTime" function.
