Code review comment for lp:~unity-team/platform-api/devel-for-qtmircompositor

> Few things:
>
> 1. If we can avoid breaking ABI, lets avoid breaking ABI. Please lets just add
> new functions for window event handling in addition to the existing input
> event ones, just mark them as deprecated in their comments. Not a big
> commitment to ABI stability, but in this case it looks relatively easy to
> *not* break it.
>
> 2. All new functions need to have stubs provided in the other modules
> (testbackend, for example). They also need to be added to the base
> ubuntu_application_api.cpp source that builds the base SO from macros.
> window_is_focused is not there.
>
> 3. All module_version.h files need to be updated the reflect the version. Same
> goes for base_module.h, neither of these are modified in here.

Some of these things are commented in line