[FEAT](CCC PlotBg) Plot Bg panel allows effectively changing the background color, below the grid-lines, and is a more natural way to do it when multiple plots exist.
[FEAT](CCC time) Added some time/weekday functions.
[REFA][FIX](CCC focusWindow) Many fixes; Separated most logic stuff into the CartesianFocusWindow class; Options are all now within the FocusWindow and FocusWindowBase namespaces.
[FIX](jshint) Small fixes to the previous commit (focuswindow)
[UPD](protovis) Latest version, containing behavior-related improvements.
[FEAT](time) Added pvc.time.intervals with common date intervals ('w', 'd', ...)
[FEAT](signs) Now distinguish the type of interaction to *show*: activity and/or selection (a sign can respond or not to selection, and can show selection or not, independently). Updated signs' implementations to respect the showsSelection part of this.
[EXP][FEAT](selection) added a "SelectionMode" chart option, with values _rubberband_ and _focuswindow_. The former is the default. The later activates a sliding focus window, aligned with the base axis, that selects datums contained in it. Also added base axis options _FocusWindowResizable_, _FocusWindowMovable_, _FocusWindowConstraint_, _FocusWindowBegin_, _FocusWindowEnd_ and _FocusWindowLength_ (accessible with baseAxis prefix). This feature is still experimental and is not documented.