Please consider changing testify release process so new releases will be visible from repository Github releases page. Seeing latest version date at the right side of the repository landing page in Github is useful.
https://github.com/stretchr/testify/releases
https://github.com/stretchr/testify/tags
Currently these pages are quite different. If you are used to check releases page the current version then what you would see is quite different what tags page shows.
It does not need to contain fancy changelog or changelog at all.
This is what I see at the moment - almost 2 years old release:
