initial interfaces and base impls for design def
design def handler initial impl
add design def handler to xmlwriter
adding design attribute def
rename attribute design classes
read allowed attributes for attribute design def
attribute design builder progress
set attributes in attribute design handler
design def handler
add design and attribute design defs to registries
headers
Merge commit '210f1f1ad8' into designdef-update
update AttributeDesignDef interface
code style cleanup
remove unnecessary todos
add label to design file parsing
fix imports
use label from builder in AttributeDesignDefImpl
design def test case
license header