[CDF-372] - CCC - The new pointing mode, "near", is not working satisfactorily
* New protovis version with several improvements to the point behavior.
* Added max pointing radius to the legend markers, and to rule and label signs, in general.
* Fixed pointing instability problem in the tree map plot due to the existence off-sight nested rectangles.
* Updated documentation for the pointing options.
* Fixed issue where the HeatGrid would not show the tooltip when pointingMode=near
Merge pull request #135 from dcleao/CDF-372

[CDF-372] - CCC - The new pointing mode, "near", is not working satisfactorily
[CDF-396] - CCC - options to better control the size and spacing of cartesian discrete axes bands.
* New cartesian axis options BandSizeMin and BandSpacingMin.
* GridDockingPanel can now handle child size increase.
Merge pull request #136 from dcleao/CDF-396

[CDF-396] - CCC - options to better control the size and spacing of cartesian discrete axes bands.
[CDF-396] - CCC - options to better control the size and spacing of cartesian discrete axes bands.
* New cartesian axis options "BandSizeRatio" (defaulted to "panelSizeRatio"), "BandSize" and "BandSpacing".
* JsDocs documentation for all the new options.
* Updated test and site examples.
Merge pull request #137 from dcleao/CDF-396

[CDF-396] - CCC - options to better control the size and spacing of cartesian discrete axes bands.
[CDF-371] - CCC - Ability to specify the first day of week for generated ticks of timeseries axes
* New quantitative	scale method "dateTickWeekStart".
Merge pull request #138 from dcleao/CDF-371

[CDF-371] - CCC - Ability to specify the first day of week for generated ticks of timeseries axes
[CDF-371] - CCC - Ability to specify the first day of week for generated ticks of time-series axes
* JsDocs for the <cartesian-axis>Scale_ extension point, which includes that of the new "dateTickWeekStart" property.
Merge pull request #139 from dcleao/CDF-371

[CDF-371] - CCC - Ability to specify the first day of week for generated ticks of time-series axes
[CDF-398] - CCC - make existing cartesian axes option "TickFormatter" also apply to discrete axes
* Code and JsDocs
Merge pull request #140 from dcleao/CDF-398

[CDF-398] - CCC - make existing cartesian axes option "TickFormatter" also apply to discrete axes