[experiment]Ver 0.9.3f2 Patch Notes

[experiment] Ver 0.9.3f2

1. Fix some typos.
2. Now walls can support rafts on upper floor.
3. Add a key guide: how to hide all the key guides.
4. Fix the hierarchy and size error of some UI.
5. Fix the animation error of Karken in the special event.
6. Add a shortcut key for copying buildings.

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