Proguard issues

[acarlsen]

Thank you so much for creating this library. Works great for me.

I did have some issues with it working initially because I use Proguard for my application.
I had to add the following exclusion rules for it to work on Windows and Linux:

-keep class com.kdroid.composetray.** { *; }
-keep class StdCallCallback { *; }
-keep class WindowsNativeTray { *; }
-keep class WindowsNativeTrayLibrary { *; }
-keep class WindowsNativeTrayMenuItem { *; }

That is fine, but because the last 4 files does not have namespace defined, they had to be added explicitly and was not catched by the com.kdroid.composetray exclusion, which took me a while to figure out, perhaps that can be improved, so they are in the proper namespace.

[kdroidFilter]

Thank you very much for your remark. Indeed, this is a library that I wrote very quickly, and I will try to improve this.

[kdroidFilter]

fix with #137