Support microseconds in Duration conversions

[edudar]

When ms is too long, one has to resort to using ns right now but it's 6 orders difference. It would be useful to support μs as a unit in between. It could be a little cumbersome to type as alt+m but I guess it'd be ok occasionally. My specific use case is with scaling micrometer histograms where calls take less than a millisecond to complete but still in thousands of nanoseconds, so microseconds would be very welcomed to be configured through external configuration.

[philwebb]

I wonder if we could come up with some other suffix that's easier to type and less likely to get messed up by character encoding. Perhaps mu?

[wilkinsona]

How about us?

[snicoll]

Reopening as the metadata won't be generated properly if that style is used. There is not much we can do about it as there isn't a factory method on Duration for it.

[snicoll]

I thought we were doing something special with DurationStyle but we don't. As there isn't a way to construct such value, I guess that's fine even though this is now a format we can only used as an input and that we can't have as default value. Are we ok with that inconsistency?