Marc Fisher

FR: Improvements to session manager

1

I am trying to use the session manager in a context where I want to attach to all existing targets, and then attach to and get messages about detaching from...

The [W3C WebDriver spec](https://www.w3.org/TR/webdriver/) is getting close to CR status, and some endpoints (notably GeckoDriver and EdgeDriver) will only support the new spec. There are some changes that will need...