Moved some Element to HTMLElement (to follow official IDL)
Required temporary casting
Added documentation
Added the description attribute
Adjusted ErrorCode to IDL and improved Error extensions, moved HttpMethod
Added ChildNode IDL, adjusted to ErrorCode refactoring
Added files and ext. method for reflection
Renamed DomException
Renamed DomException
Moved the ElementSibling properties to the right place
Changed the return type to IElement