0.2.7

• Make Instant::{duration_since, elapsed, sub} saturating to follow the upstream change.

• Add #[must_use] to follow upstream changes.

0.2.6

• Increase the minimum supported Rust version from Rust 1.34 to Rust 1.58.

0.2.5

• Remove dependency on const_fn crate.

0.2.4

• Make Duration::new const function on Rust 1.58+.

• Make Duration::is_zero const function on Rust 1.46+. Previously, this was const function on Rust 1.53+.

• Documentation improvements.

0.2.3

• Add {Duration, Instant}::NONE constants. (#27, thanks @dhardy)

0.2.2

• Add Duration::{ZERO, MAX, is_zero} methods.
  They are based on the same methods in the standard library that stabilized on Rust 1.53.

0.2.1

• Apply doc(cfg(...)) on feature gated APIs.

0.2.0

• Add Duration::{as_secs_f64, as_secs_f32, from_secs_f64, from_secs_f32, mul_f64, mul_f32, div_f64, div_f32} methods.
  They are based on duration_float feature of the standard library that stabilized on Rust 1.38.

• Make Duration::{as_secs, subsec_millis, subsec_micros, subsec_nanos, as_millis, as_micros, as_nanos, is_some, is_none, unwrap_or} const function on rustc 1.46+.

• Make Instant::{is_some, is_none, unwrap_or} const function on Rust 1.46+.

• Implement TryFrom for Instant and Duration.
  With this change, the minimum required version of easytime without default features goes up to Rust 1.34.
  (The minimum required version of the default feature has not changed.)

• Implement PartialEq<std::time::Duration> and PartialOrd<std::time::Duration> for Duration.

• Implement PartialEq<std::time::Instant> and PartialOrd<std::time::Instant> for Instant.

• Implement From<Option<std::time::Duration>> for Duration.

• Implement From<Option<std::time::Instant>> for Instant.

• Changed the Debug implementation of Duration to display the same as the result of std::time::Duration::checked_*.

• Documentation improvements.