Only emit each `somewhatImplemented` message once
Only emit each `somewhatImplemented` message once

Currently, this gets spammy real fast.

mozilla/shumway,mozilla/shumway,mbebenita/shumway,yurydelendik/shumway,mbebenita/shumway,tschneidereit/shumway,mozilla/shumway,mbebenita/shumway,mbebenita/shumway,tschneidereit/shumway,yurydelendik/shumway,tschneidereit/shumway,tschneidereit/shumway,yurydelendik/shumway,mbebenita/shumway,mbebenita/shumway,yurydelendik/shumway,tschneidereit/shumway,mozilla/shumway,tschneidereit/shumway,yurydelendik/shumway,yurydelendik/shumway,mbebenita/shumway,tschneidereit/shumway,mbebenita/shumway,tschneidereit/shumway,mozilla/shumway,mozilla/shumway,mozilla/shumway,mozilla/shumway,yurydelendik/shumway,yurydelendik/shumway