Knows how to render a ProgressTracker to the terminal using coloured, emoji-fied output. Useful when writing small command line tools, demos, tests etc. Just set the progressTracker field and it will go ahead and start drawing if the terminal supports it. Otherwise it just prints out the name of the step whenever it changes.

Enum for when adding/removing something, for example adding or removing an entry in a directory.

An extended executor interface that supports thread affinity assertions and short circuiting. This can be useful for ensuring code runs on the right thread, and also for unit testing.

Utilities and serialisers for working with JSON representations of basic types. This adds Jackson support for the java.time API, some core types, and Kotlin data classes.