[FIX] (CCC pvc.text.trimToWidth) The trim terminator width was wrongly being taken into account.
[FIX] (CCC Legend Panel Label Font) Not being able to change the legend font by using a constant valued extension point, and this affecting layout.
[FIX] (protovis) Now the properties may call other properties and this will always return an up to date value, on any instance.
[FIX] (CCC Panel axes) The panel axes dictionary now inherits from the chart axes so that all axes are defined and not just overriden ones.
[FIX] (CCC Tooltip Intermediate Scenes) The tooltip would not show in intermediate scene zones in Area and Line marks.
Now the tooltip is redirected to the main scene.
[FIX] (CCC Axis Gridlines) Unlocked the axis grid rule "position" (left or bottom) extension point.

[PERF] (protovis Area Line) Area and Line marks with interaction enabled would render much slower that when non-interactive.
An overlay of fully-segmented paths existed solely to detect events for each scene/instance.
By implementing scene/instance index redirection, the events overlay is not needed anymore.
[PERF] (CCC GroupingOper) Improving performance of the Grouping operation and of Data creation.

[FEAT](CCC pvc.text.trimToWidth) Labels are now hidden when the trimmed text is below a given size.
[FEAT] (CCC Legend Tooltip Label Trimming) Legend items' labels are now trimmed on overflow, and the tooltip shows the original text. Still need to better place the tooltip relative to the label. Still need an option for not showing the tooltip (like in the axis panel).
[FEAT] (CCC Treemap Colors) ByParent color scale now includes the colors of parents that have colors assigned.
These parent's colors are calculated by color averaging of children colors.
[FEAT] (CCC Treemap ValueLabel Hide) Value labels are now hidden when they wouldn't show relevant information.
[FEAT] (CCC extension points scene variables sugar) Added sugar syntaxes for accessing scene variables values and labels, from the Scene or the Context.
Two syntaxes:
* a generic one #get(varName, [prop='value']).
* a specific and discoverable one: #getSeries(), #getCategory(), #getValue(), #getSeriesLabel(), #getCategoryLabel(), #getValueLabel(), ... Also for "X", "Y" and "Tick".