The events are:
As I see it currently I have to create 2 plugins for it. Once a plugin of the type "installer" and once of the type "system".
Is that really the case? I would like to offer the user the possibility to manage everything in one plugin. It seems to be a bit "overkill" to have a plugin that checks the DownloadID before an update and to provide a ThirdParty API Key in JS...