Update changelog for v1.1.1 (#1131)
Update changelog for v1.1.1 (#1131)

* Update changelog for v1.1.1

Via GitHub API.

* Fix typo.

* Regenerate file again

AlCutter/trillian,gdbelvin/trillian,RJPercival/trillian,daviddrysdale/trillian,Martin2112/trillian,Martin2112/trillian,daviddrysdale/trillian,google/trillian,daviddrysdale/trillian,gdbelvin/trillian,gdbelvin/trillian,AlCutter/trillian,Martin2112/trillian,google/trillian,RJPercival/trillian