Attempt to fix error caused by same sprite found in two spritesheets

[marekventur]

Error: Sprite word_option_button_00018 exists twice in manifest web_retina. Contained groups: game, game

My current theory as to why this is happening is that due to some file system shenigans the order of sprites processed has changed. Since the group hash is based on a sorted list of sprites this will mean the group hash stays the same. It might however change which sprites gets put into which spritesheet, potentially leading to a case where only some spritesheets get reprossesed and certain sprites now being found in two spritesheets.

This fix adds the whole set of sprite paths to the spritesheet hash invalidating them when the collection of sprites on that sheet changes.

Disclaimer: I have so far not been able to replicate this locally, so this fix is an educated guess.

This will change the hash key for all spritesheets, so expect longer build times for the one build after the update.

[marekventur]

@uorbe001 are you happy with this? I could do a shared release together with #4, it would save me the work of having to update all the games twice.

[uorbe001]

@marekventur just one comment