Blender Export issues

1. Metadata
a. In order to match Dublin Core Metadata Item (DCMI) conventions,
   <meta name="filename" content="BlenderDefaultBox.x3d" />
   should be
   <meta name="title" content="BlenderDefaultBox.x3d" />
b. Include url after generator (authoring tool) name, e.g.
   <meta content='Blender 2.82 (sub 7) https://blender.org' name='generator'/>
c. Missing name of X3D scene author in meta tag, add
   <meta name='creator' content='Author Name'/> [/X3D/head, info]
d. Missing X3D scene description in meta tag, should appear as
   <meta name='description' content='topic sentence plus good summary'/>
e. Add typical document metadata, e.g.
   <meta content='19 March 2020' name='created'/>
   <meta content='19 March 2020' name='modified'/>
   <meta content='author name' name='creator'/>
f. Prompt author for license, e.g.
   <meta content='http://www.web3d.org/x3d/content/examples/license.html' name='license'/>
    
2. Attribute values and file-size reduction
a. Remove trailing zeroes
b. Remove default values, for example
   <Transform rotation='0 1 0 0' scale='1 1 1' translation='0 0 0'/>
c. Avoid prepending minus sign on zero -0, use 0 instead (or omit if default value)

3. X3D (document root)
a. Recommend version='3.3' rather than 3.0, also affects XML Schema and DTD
b. Reduce profile="Immersive" to profile='Interactive' or profile='Interchange'
   when appropriate

4. Viewpoint
a. Missing description, which is important for accessibility and usability.
   Example: description='initial view, rotate to examine object'
b. Moving Viewpoint as child of Transform breaks navigation modes, as a result
   EXAMINE rotations are incorrect and other modes are counterintuitive.
c. Why is default Viewpoint position starting from behind the model?

5. Additional suggestions
a. Include WorldInfo node at top of scene graph for model title.  Example:
   <WorldInfo title='Model Title'/>
b. Provide option of X3D Canonicalization (C14N) for terse/consistent format
   that is also suitable for version-control diffs and XML security.