errorHandler needs to be instantiated (there's more than one way to construct this beast and subclasses don't necessarily call super constructor).

Fixes Issue #7415
Belatedly removing long-obsolete .NET tests for AndroidDriver
Adding support for SwitchTo().ParentFrame() in .NET bindings

This brings the .NET bindings into parity with other languages. Fixes
issue #7419.
Adding URL endpoint for switchToParentFrame

This allows consumers of the webdriver-server module to implement the
switchToParentFrame command. Note that this does **not** mean that the
command is automatically implemented in drivers that use this module; it
simply means that the driver will correctly understand the URL endpoint.
As an example, the IE driver should now properly return "command not
implemented" rather than "unknown command".
bumping versions for 2.42.2 adding changelog entry
Remove unneeded else in conditional