Somehow std::common_type_t<minute_t<double>, millisecond_t<float>> is failing. You can use other floating-point types. But don't change the units' order! Or it will work...
Sorry. It was added in c57e5f4. This unsynchronized duplication bit me. You can get rid of it in #211, which removes the abbreviation-named conversion factors.
Somehow
std::common_type_t<minute_t<double>, millisecond_t<float>>
is failing. You can use other floating-point types. But don't change the units' order! Or it will work...