Micro: A trait for fluent Durations

I dislike the pattern in some languages to create durations by multiplying constants. It feels like a concession when it cannot be expressed more nicely. There’s a tracking issue to add such constants in libstd. How about a trait instead? (I suggested it in the tracking issue a long time ago, but it’s lost in the noise). Rust traits are awesome. They can be implemented on any other type, even…