//! Overnight-rate averaging conventions.
//!
//! Port of `ql/cashflows/rateaveraging.hpp`. An overnight coupon either
//! compounds its daily fixings ([`Compound`](RateAveraging::Compound), the
//! default) or averages them arithmetically ([`Simple`](RateAveraging::Simple)).
/// How the daily overnight fixings of a coupon are combined.