Update documentation to match latest changes w.r.t. SpottedPart and SpottedQuit. Document 'unload' since three standard modules use it.
Update documentation to match latest changes w.r.t. SpottedPart and SpottedQuit. Document 'unload' since three standard modules use it.

nateinu/MozBot,nateinu/MozBot,nateinu/MozBot,nateinu/MozBot