Bump version to 1.1.0 and update changelog

Bump version: 1.0.9

Not yet uploaded to Hackage, will contact Eyal :)

Bump version: 1.0.8.1

No behaviour changes since 1.0.8, just update dependency version bounds

Bump version: 1.0.8

Upgrade to Diff 0.4

Bump version: 1.0.6

Bump version 1.0.5: Add description, stack.yaml is in extra-source-files