Version 1.1.0

[ninioArtillero]

This version benefits from relevant performance optimizations (see #25, #30 and #37, leading to a ~2.4x and ~8.5x getDiff improvement on benchmarks) and removes groupBy' from the API (see #26). The latter calls for a major version bump, hence 1.0.2 -> 1.1.0.

[ninioArtillero]

@ddssff I think this new version calls for a new release on hackage. How should we approach it?

[ninioArtillero]

@ddssff Also, depending on convention (e.g. https://semver.org/) , the bump might need to be 1.0.2 -> 2.0.0 instead.