Tiled 1.8.6

• Keep references between objects when copy/pasting or duplicating (#3361)
• Improved default translation used in case of multiple options
• Terrain Brush: Update preview on mouse release (#3381)
• Fixed 'Add Variation' action in Tile Stamps context menu (#3362)
• Fixed importing of removed shortcuts (#3367)
• Fixed breaking of alternative shortcuts on import or reset (#3367)
• Fixed conflict detection to handle alternative shortcuts (#3368)
• Fixed locking up UI on property type name conflict (#3380)
• Scripting: Fixed possible crash when accessing Layer.map
• Defold plugins: Added support for rotated tiles (#3369)
• Updates to German translation (by Ettore Atalan)