Fixes issues:
- 24:
> Cagebreak up to and including release 1.5.1 had an error, where the code
> incremented a variable and not a pointer. This resulted in a bug in a
> surface counting iterator.
- 25:
> Cagebreak, beginning with release 1.5.0, when a keybinding containing an
> output configuration is removed from the list of active keybindings, the
> output configuration contained in this keybinding is destroyed in order to
> prevent memory leaks. However, after an output configuration was applied,
> it was inserted into the list of active output configurations and if it was
> later destroyed, this led to a use-after-free memory corruption.
>
> Starting from release 1.6.0, output configurations are copied before being
> inserted into the list of active output configurations and therefore remain
> valid even if the original is freed.
