# Changelog **v3.0.0** - **breaking change**: the `toFlag` method was removed - Adds gulp and istanbul for test coverage - 100% test coverage **v2.0.0** - Implements `mapVisit` to ensuree that `option` will be called and an event will be emitted for each key-value pair passed on the arguments. - Adds `mixin` as a static method, for mixing the properties of `option-cache` onto the provided object.