TODO

Before Next Pull to `master`

Rename ShellNode and ShellNodeData to shell::Node and shell::NodeData, respectively
Move the ShellItem2Pointer out of shell::NodeData to shell::Node and shell::NodeInfo
Rename IdList to NodeId? Rename Node to Item?
Add detach() function to NodeData
Finish free shell:: functions

Later

Add EnumerationController
Add icon support
qewindows/shellnode: add CLSID accessor for the handler