regit-daycount 1.0.1

Day-count fractions and business-day calendars in pure Rust — Act/360, Act/365F, ActAct ISDA, ActAct ICMA, 30/360, 30E/360, Bus/252; TARGET2, US, UK, JP, CH, HK, SG holiday calendars; all date-roll conventions. Zero dependencies, no_std, no alloc.