XSD: unneccesary wrapper elements

The current version of the schema (v3.0 RC01) has unnecessary wrapper elements around each Submodel Element and Data Element.

forwarded to DotAAS-Group: Issue 22

Submodel Element

<submodelElements>
    <submodelElement> <!-- this is unnecessary -->
        <entity/>
    </submodelElement>
    <submodelElement> <!-- this is unnecessary -->
        <property/>
    </submodelElement>
    [...]
</submodelElements>

We suggest the removal of the wrapper element:

<submodelElements>
    <entity/>
    <property/>
    [...]
</submodelElements>

Data Element

<annotations>
    <dataElement> <!-- this is unnecessary -->
        <property/>
    </dataElement>
    <dataElement> <!-- this is unnecessary -->
        <range/>
    </dataElement>
    [...]
</annotations>

Again, we suggest the removal of the wrapper element:

<annotations>
    <property/>
    <range/>
    [...]
</annotations>