make scrolling demo work
scrolled state.dragging
scrolling notes

some scrolling disabled
ElementPlacement construction before insert

Allow making an ElementPlacement before the element is added to DOM
scrolled state.dragging
query role=template

test DescriptorQuery("[role=template")
ElementPlacement fix

no element set
HTMLElement("set impl")
Don't copy impl _cleaners
getConfig on loaded page

head in IE can have access denied
DescriptorQuery(el)

Check nodeType
Attributes to no copy

classList
layouter
laidout
stateful
change scrollbar color

black 50% opacity
switch from rgba
sizing enhanced

even without sizingHandler
scrolled enhance content

enhance content with DescriptorQuery
scrolled state.over