* [spec2] colors in morphic SpStyle now accept named or hex definitions (too illegible to add

    them as Color decomposed STON expressions)

    * [spec2] propagateNaturalWidth/propagateNaturalHeight now works for SpTextPresenter

    * [newtools] fix the problem on the shortcut handling (they were ignored)

    * [spec2] text presenter. While fixing propagateNaturalHeight: I needed to revisit how styles

    are applied: basically before I was passing from top to bottom style applying it and now I

    realise that I cannot because I need to be able to reset the style (case .application and .text

    with the height of components). So I developped a merge function and I apply that. And now I

    broke propagateNaturalWidth: :( 

    * [spec2] finally, the popovers with text presenters and propagation of width/height are working!

    * [newTools] printIt command for playground now uses popover

    * [spec2] fix a problem where removing a presenter that was resolved from a symbol (a possible

    case when declaring layouts) was failing.

    * [spec2] added lowlevel eventHandler. Now presenters can plug to low level

    events: focus/mouse/keyboard.