Where to find doc ?

Hi, I’d like to find some doc on hooks like ‘wpcf7_mail_sent’,

I only found some in the plugin news, but can’te be sure if it’s still the same or have been changed, like here : http://contactform7.com/2014/07/02/contact-form-7-39-beta/

https://wordpress.org/plugins/contact-form-7/