chore(release): 2.1.0 [skip ci]

# [2.1.0](https://gitlab.com/to-be-continuous/php/compare/2.0.1...2.1.0) (2022-05-01)

### Features

* configurable tracking image ([143750e3](https://gitlab.com/to-be-continuous/php/commit/143750e328ce32eb563e94a8273bec80672ffbc7))