> This didn't allow the load event to bubble -- pulling out that change for now

Are you sure, I do see both DOMContentLoaded and load events just fine with my pull request:

```
info: scratch-kit: load [object HTMLDocument] https://plus.google.com/hangouts/_/pre?authuser=0
info: scratch-kit: DOMContentLoaded [object HTMLDocument] https://plus.google.com/hangouts/_/pre?authuser=0
info: scratch-kit: document-element-inserted [object HTMLDocument] https://plus.google.com/hangouts/_/pre?authuser=0
info: scratch-kit: load [object HTMLDocument] https://plus.google.com/u/0/_/streamwidgets/notificationdetail?origin=https%3A%2F%2Fmail.google.com&hl=en&jsh=m%3B%2F_%2Fscs%2Fabc-static%2F_%2Fjs%2Fk%3Dgapi.gapi.en.xwYg6WFJXwU.O%2Fm%3D__features__%2Fam%3DQA%2Frt%3Dj%2Fd%3D1%2Frs%3DAItRSTPn4xj5K-wCuxa2RZPyuGaexdaENw#rpctoken=317937548&_methods=noContent%2CcontentReady%2Cbutterbar%2Ckeystroke%2CresizeCanvas%2C_ready%2C_close%2C_open%2C_resizeMe%2C_renderstart&id=I2_1366706053970&parent=https%3A%2F%2Fmail.google.com
info: scratch-kit: DOMContentLoaded [object HTMLDocument] https://plus.google.com/u/0/_/streamwidgets/notificationdetail?origin=https%3A%2F%2Fmail.google.com&hl=en&jsh=m%3B%2F_%2Fscs%2Fabc-static%2F_%2Fjs%2Fk%3Dgapi.gapi.en.xwYg6WFJXwU.O%2Fm%3D__features__%2Fam%3DQA%2Frt%3Dj%2Fd%3D1%2Frs%3DAItRSTPn4xj5K-wCuxa2RZPyuGaexdaENw#rpctoken=317937548&_methods=noContent%2CcontentReady%2Cbutterbar%2Ckeystroke%2CresizeCanvas%2C_ready%2C_close%2C_open%2C_resizeMe%2C_renderstart&id=I2_1366706053970&parent=https%3A%2F%2Fmail.google.com
info: scratch-kit: load [object HTMLDocument] https://plus.google.com/u/0/_/streamwidgets/canvas?zx=0.17276524165199303
info: scratch-kit: DOMContentLoaded [object HTMLDocument] https://plus.google.com/u/0/_/streamwidgets/canvas?zx=0.17276524165199303
info: scratch-kit: document-element-inserted [object HTMLDocument] https://plus.google.com/u/0/_/streamwidgets/notificationdetail?origin=https%3A%2F%2Fmail.google.com&hl=en&jsh=m%3B%2F_%2Fscs%2Fabc-static%2F_%2Fjs%2Fk%3Dgapi.gapi.en.xwYg6WFJXwU.O%2Fm%3D__features__%2Fam%3DQA%2Frt%3Dj%2Fd%3D1%2Frs%3DAItRSTPn4xj5K-wCuxa2RZPyuGaexdaENw#rpctoken=317937548&_methods=noContent%2CcontentReady%2Cbutterbar%2Ckeystroke%2CresizeCanvas%2C_ready%2C_close%2C_open%2C_resizeMe%2C_renderstart&id=I2_1366706053970&parent=https%3A%2F%2Fmail.google.com
info: scratch-kit: document-element-inserted [object HTMLDocument] https://plus.google.com/u/0/_/streamwidgets/canvas?zx=0.17276524165199303
info: scratch-kit: load [object HTMLDocument] https://mail.google.com/_/mail-static/_/js/main/m_i,t,it/rt=h/ver=NB-HmMH_MVQ.en./sv=1/am=!JjrcIo7GA7b0RPF-I9tbYvMmng3ebDyl_P_8x6oHjibkXIWMGVYBm09hIrk6FkbkhW4Ib7c/d=1
info: scratch-kit: DOMContentLoaded [object HTMLDocument] https://mail.google.com/_/mail-static/_/js/main/m_i,t,it/rt=h/ver=NB-HmMH_MVQ.en./sv=1/am=!JjrcIo7GA7b0RPF-I9tbYvMmng3ebDyl_P_8x6oHjibkXIWMGVYBm09hIrk6FkbkhW4Ib7c/d=1
info: scratch-kit: document-element-inserted [object HTMLDocument] https://mail.google.com/_/mail-static/_/js/main/m_i,t,it/rt=h/ver=NB-HmMH_MVQ.en./sv=1/am=!JjrcIo7GA7b0RPF-I9tbYvMmng3ebDyl_P_8x6oHjibkXIWMGVYBm09hIrk6FkbkhW4Ib7c/d=1
```