How do you get started writing Paint.Net plugins for effects and tools?
I'm an experienced programmer and have been in .Net since beta so I'm looking for as much tech info as possible so I can try my hand at some plugins. I've done a fair bit of reading so far including going to BoltBait's site and looking into the CodeLab feature he's maintaining now but how about writing native, from-scratch C# plugins? Is there an API somewhere? Are there coding examples I'm missing. I saw a post from a while ago that suggested some of this was available off of the download page on getpaint.net but I don't see it there.
I'm not looking to be spoon fed here but since I haven't been able to find the resources any help would be appreciated.