Feature request: support now keyword in the time range

[mkuratczyk]

I'd like to be able to just put now as the end of the time range to see the profiles from a specific moment in time (eg. when a spike started) util now. When loading the data, now would simply be replaced with the actual current timestamp. This would allow time ranges such as "from 11:05:00 until now".

This would be similar to Grafana, although Grafana allows a lot of sophisticated expressions that I personally almost never use. If there's a way to share a library that evaluates/resolves these expressions into time ranges, I guess this would be nice, although probably much more work:
https://grafana.com/docs/grafana/latest/dashboards/use-dashboards/#semi-relative-time-range

Personally I'd be perfectly happy with just now as an "alias" for the current time.

Thanks