scatterD3 0.3
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* Charts integrated into a shiny app are now fully updatable : when data or settings change, the plot is updated with smooth transitions instead of being redrawn. See the `transitions` and `key_var` arguments.
* HTML DOM id of elements linked to the "Reset zoom" and "Export to SVG" features can now be given as arguments.


scatterD3 0.2
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* Add `colors` argument to specify a custom set of point colors. A named vector can be used to directly map values to colors (Thanks @timelyportfolio)
* Complete code reorganisation, much cleaner
* New `legend_width` argument
* Use `d3-legend` plugin for legend generation (http://d3-legend.susielu.com/)
* New `xlim` and `ylim` arguments for manual axis limits specification (Thanks @tinyheero)
* Fix tooltips not showing under Shiny/Bootstrap (Thanks @tinyheero for reporting)
* Fix tooltip content when several scatter plots are displayed on the same page
* Respect custom label position when zooming



scatterD3 0.1.1
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* First version
