Slowly move platform specific code into there own abstract classes.
Move dtx.sys classes into dtx.std package.
Split Tools into platform specific classes.
Minor
Add `toDOMCollection` to abstracts.
Add csharp DOMType.hx
Remove type param.
Replace `T:DOMCollection` and corresponding `T` parameters with `DOMCollection`
Add `fromDOMCollection` to DOMNode.hx
Add import `dtx.DOMNode`
Remove @:to and @:from from abstracts, causing bugs.
Put original DOMType.hx back.
09 should have worked?
minor csharp.
Minor cleanup.
Minor java.