LGTM.

The launcher is in a bit of a funny place wrt versioning, as it is now somewhat independent from the Python version it is installed with:

* won't be downgraded by 3.5 (3.4 will still stomp over the file itself)
* has a separate entry in Programs & Features
* won't be uninstalled by the regular Python installer
* (theoretically can be installed separately, but since we don't link to the MSI... ;) )
* this includes alpha/beta releases of 3.6

So I wouldn't have an issue with this going into 3.5, in the same way that we will update the bundled setuptools/pip in minor releases, but since we don't have an official OK for that just putting it into 3.6 is fine.