UTC no longer part of chrono

[jrconlin]

Looks like a bit of bitrot set in

--> /home/jrconlin/.cargo/registry/src/github.com-1ecc6299db9ec823/asn1-0.1.0/src/lib.rs:9:24
  |
9 | use chrono::{DateTime, UTC};
  |                        ^^^ no `UTC` in the root

I'm not sure, but I belive that this is now Utc
https://docs.rs/chrono/0.4.0/chrono/offset/struct.Utc.html

[alex]

Fair warning, this isn't terribly complete.

If y'all need this for autopush, we should figure out if there's a way to make it complete :-)

[jrconlin]

Not using this for autopush. I'm experimenting with rust and building a VAPID library (and probably a webpush publish library afterwards) and just need something to convert from the raw r/s ints to DER for the OpenSSL library. (Honestly, I could probably get away with just having a template, but I'd prefer using a library when possible.)

Thanks!