# Changelog ## 1.4.0.0 ### Non-breaking changes * Prevent underflows in `threadDelay` (issue #129) ## 1.3.0.0 * `io-sim-1.3.0.0`. * Support `ghc-9.8`. ## 1.2.0.0 ## Non breaking changes * Added NFData & NoThunks instances for `Time` ## 1.1.0.0 ### Non breaking changes * `io-classes-1.1.0.0` ## 1.0.0.1 ### Non breaking changes * Support `ghc-9.6`. ## 1.0.0.0 * initial version