* update: enable message loop work for Windows and Linux
* update: upgrade Bevy to version 0.18 and adjust asset loader for path handling
* update: rename bevy_picking to picking in Cargo.toml
* update: remove pull_request trigger from CI and change AmbientLight to GlobalAmbientLight
* update: remove demo example from workspace and exclude it from tests
* update: remove demo package from Cargo.lock
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Co-authored-by: not-elm <elmgameinfo@gmail.com>
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