This finally switches Strutil::format to use std::format conventions. You can still access the old printf convention via Strutil::old::format(), and can explicitly access the new convention uniformly on both 2.x and 3.x via Strutil::fmt::format().
It also removes a long-deprecated vformat function.
We've been waiting for 3.0 to make this non-back-compatible change.
This finally switches Strutil::format to use std::format conventions. You can still access the old printf convention via
Strutil::old::format(), and can explicitly access the new convention uniformly on both 2.x and 3.x viaStrutil::fmt::format().It also removes a long-deprecated vformat function.
We've been waiting for 3.0 to make this non-back-compatible change.