Version 1.1

Added information about the name of the archive
Updated version attributes from the root node. We now have to integer values for this.
The version attribute from the UserData node is now a String so it can contain any data.
Make it clear that the SymDef can contain Symbol and Geometry3D nodes.
Geometry3D file attribute defines the behavior if there is no extension for a file.
Changed the matrix definition to match GDTF.
Make it clear that a layers parent coordinate system is the global coordinate space.
Give the option to have multiple addresses.
Add DMX node to fixture. This can be used to define the DMX Mode for the GDTF file.