v5.3.1

• Disable some optimizations that, in rare conditions, can cause race conditions
  causing notifications to be dropped. (#139)
• Ensure the portable-atomic feature is set properly. (#134)
• Update portable-atomic-util to v0.2.0. (#132)
• Document the std feature. (#134)

v5.3.0

• Add a loom implementation. This feature is unstable and is not semver-supported. (#126)
• Make the panic message for polling the EventListener after it has completed more clear. (#125)

v5.2.0

• Make StackSlot Sync. (#121)

v5.1.0

• Make StackSlot Send. (#119)

v5.0.0

• Breaking: Rework the API to afford better usage. (#105)
  • The heap-based API of the v2.x line is back.
  • However, there is a stack-based API as an alternative.
• Add a way to get the total number of listeners. (#114)

v4.0.3

• Relax MSRV to 1.60. (#110)

v4.0.2

• Avoid spinning in wait_deadline. (#107)

v4.0.1

• Fix a use-after-move error after an EventListener is assigned to listen to
  another Event. (#101)

v4.0.0

• Breaking: Fix a footgun in the EventListener type. EventListener::new()
  now no longer takes an &Event as an argument, and EventListener::listen()
  takes the &Event as an argument. Hopefully this should prevent .awaiting
  on a listener without making sure it's listening first. (#94)

v3.1.0

• Implement UnwindSafe and RefUnwindSafe for EventListener. This was unintentionally removed in version 3 (#96).