Tempo version 1.2.0

[v1.2.0] — 2026-08-03

Added

• Tempo.compare/3 returns stdlib's ternary :lt | :eq | :gt, so Tempo can be passed as a sorter module anywhere Date or DateTime would be — Enum.sort(values, Tempo), Enum.sort_by(sessions, & &1.starts_at, Tempo), Enum.min/2, Enum.max/2. Consumers previously had to hand-roll a comparator around Tempo.Compare.compare_endpoints/2, and reaching for plain Enum.sort/1 silently sorted by Erlang term order.

• Tempo.compare/3 orders t:Tempo.t/0 by start-moment, t:Tempo.Duration.t/0 by length, and t:Tempo.Interval.t/0 by start with ties broken by end. Comparing a calendar-dependent duration such as P1M requires relative_to:, since a month has no fixed length; without it the call raises rather than guessing.

• Tempo.Compare is now doctested — its documented examples had never been executed.