* Typically, when resources are downloaded from a CDN, then sometimes, for
various reasons, a request for a resource may fail. In such cases, it’s
very useful to have retry for avoiding intermittent issues.
* This adds two new settings, available in the Project Properties and in the Scene Properties dialog, to allow to specify the strategy for preloading resources of the scenes and unloading them. By default, a game will preload in background the resources of all scenes. It will never unload these resources (so scene switching is fast).
* You can now choose to unload the resources of a scene when the scene is left using the "Resources unloading" field. If the scene is launched again later, it will load its resources again.
* You can also choose to change the preloading to disable it for all scenes (by modifying the setting in the project properties) or enable it/disable it on a scene by scene basis. This can be useful for large or modular games where you anticipate the player to only play some scenes, or if you want to reduce the resources that needs to be loaded on a web game.
* This allows to fully release resources, textures and anything else that is linked to a gdjs.RuntimeGame. This can be useful if multiple games must be loaded/unloaded/changed in a single web page.
Only show in developer changelog
* This allows to use animatable 2D objects created with Spine (purchase a licence on [their website](https://esotericsoftware.com/) if you're interested).
* 2D skeletal animation allows for very smooth animations, and keep resource usage low compared to animations made of frames like Sprite objects. It's perfect for 2D games and can be used for animated characters, avatars, UI elements.
* Many thanks to @f0nar and @LousyMolars for their work on this new feature and associated game examples!
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Co-authored-by: Vladyslav Pohorielov <vpohorielov@playtika.com>
Co-authored-by: Gleb Volkov <glebusheg@gmail.com>
Co-authored-by: Florian Rival <Florian.rival@gmail.com>
Co-authored-by: Davy Hélard <davy.helard@gmail.com>
ViktorVovk