v0.20.0

• Add: Display demo duration in Demo/Signature edit dialog.
• Add: Replace selection editor can replace raw HEX and all unknown tiles.
• Add: Shuffle selection editor.
• Add: Experimental support for multiple languages. Russian language added.
• Fix: FireFox cannot read text from clipboard (open/import test url).
• Fix: Open/import level by test/demo url loss local options.
• Fix: Export test/demo url could miss pd= (spec ports db) param, when spec ports db itself is std compatible without notice, that some port actually is not special port tile.

Desktop

• Fix: Copy to clipboard didn't work (level options, export as link).