v0.9-beta.9

💥 Breaking Change

• Implement multiple level of detail (lod) for Geometries (a9c33fd)
• Split LightSource/Emitter into Relative and Changeable (ca42e56)
• Rename RelativeLightEmitter to ChangeableLightEmitter (1895150)
• Unify Emitter element order (4d5d190)
• Unify *Reference elements and attributes (5371ec8)
• Change Mountings datatype from double to int (07f54ae)

🚀 New Feature

• Add more search criteria to DescriptiveAttributes (781f0c3)
• Add version attribute (8b5aaaf)
• Add optional luminous heights to simple geometry (741243a)
• Add optional Sensor Rotation element (a748ac6)

💅 Polish

• Add unit annotations (8f9ddf9)
• Better annotations for recessedDepth and *Cutout depth (de53b81)
• Change datatype for LuminousEfficacy from int to double (b1e90cf)
• Change type for Rotation from int to double (6ffdd19)