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Merge remote-tracking branch 'origin/master'

Conflicts:
	gwt-d3-api/src/main/java/com/github/gwtd3/api/D3.java
	gwt-d3-api/src/main/java/com/github/gwtd3/api/core/Datum.java
	gwt-d3-api/src/main/java/com/github/gwtd3/api/core/Formatter.java
	gwt-d3-api/src/main/java/com/github/gwtd3/api/core/Transition.java
	gwt-d3-api/src/main/java/com/github/gwtd3/api/core/Value.java
	gwt-d3-api/src/main/java/com/github/gwtd3/api/functions/DatumFunction.java
	gwt-d3-api/src/main/java/com/github/gwtd3/api/functions/KeyFunction.java
	gwt-d3-api/src/main/java/com/github/gwtd3/api/functions/NestedDatumFunction.java
	gwt-d3-api/src/main/java/com/github/gwtd3/api/interpolators/Interpolator.java
	gwt-d3-api/src/main/java/com/github/gwtd3/api/layout/ChordLayout.java
	gwt-d3-api/src/main/java/com/github/gwtd3/api/scales/LinearScale.java
	gwt-d3-api/src/main/java/com/github/gwtd3/api/scales/Scale.java
	gwt-d3-api/src/main/java/com/github/gwtd3/api/svg/Area.java
	gwt-d3-api/src/main/java/com/github/gwtd3/api/svg/Line.java
	gwt-d3-api/src/main/java/com/github/gwtd3/api/svg/Symbol.java
	gwt-d3-api/src/main/java/com/github/gwtd3/api/tweens/TweenFunction.java
	gwt-d3-demo/src/main/java/com/github/gwtd3/demo/client/democases/ArcTween.java
	gwt-d3-demo/src/main/java/com/github/gwtd3/demo/client/democases/StupidExample.java
	gwt-d3-demo/src/main/java/com/github/gwtd3/demo/client/democases/StupidExample2.java
	gwt-d3-demo/src/main/java/com/github/gwtd3/demo/client/democases/charts/LineChartDemo.java
	gwt-d3-demo/src/main/java/com/github/gwtd3/demo/client/test/AbstractTestCase.java
	gwt-d3-demo/src/main/java/com/github/gwtd3/demo/client/test/ui/RunUiHandlers.java
	gwt-d3-demo/src/main/java/com/github/gwtd3/demo/client/test/ui/TestRunner.java
	gwt-d3-demo/src/main/java/com/github/gwtd3/demo/client/test/ui/TestSessionContainer.java
	gwt-d3-demo/src/main/java/com/github/gwtd3/demo/client/test/ui/TestSessionContainer.ui.xml
	gwt-d3-demo/src/main/java/com/github/gwtd3/demo/client/test/ui/UnitTestWidget.java
	gwt-d3-demo/src/main/java/com/github/gwtd3/demo/client/test/ui/UnitTestWidget.ui.xml
	gwt-d3-demo/src/main/java/com/github/gwtd3/demo/client/testcases/D3TestSuite.java
	gwt-d3-demo/src/main/java/com/github/gwtd3/demo/client/testcases/d3/TestD3.java
	gwt-d3-demo/src/main/java/com/github/gwtd3/demo/client/testcases/scales/TestLinearScale.java
	gwt-d3-demo/src/main/java/com/github/gwtd3/demo/client/testcases/scales/TestThresholdScale.java
	gwt-d3-demo/src/main/java/com/github/gwtd3/demo/client/testcases/selection/AbstractSelectionTest.java
	gwt-d3-demo/src/main/java/com/github/gwtd3/demo/client/testcases/selection/TestSelectionAttr.java
	gwt-d3-demo/src/main/java/com/github/gwtd3/demo/client/testcases/selection/TestSelectionClassed.java
	gwt-d3-demo/src/main/java/com/github/gwtd3/demo/client/testcases/selection/TestSelectionControls.java
	gwt-d3-demo/src/main/java/com/github/gwtd3/demo/client/testcases/selection/TestSelectionData.java
	gwt-d3-demo/src/main/java/com/github/gwtd3/demo/client/testcases/selection/TestSelectionProperty.java
	gwt-d3-demo/src/main/java/com/github/gwtd3/demo/client/testcases/selection/TestSelectionStyle.java
	gwt-d3-demo/src/main/java/com/github/gwtd3/demo/client/testcases/svg/TestArea.java
	gwt-d3-demo/src/main/java/com/github/gwtd3/demo/client/testcases/svg/TestLine.java
	gwt-d3-demo/src/test/java/com/github/gwtd3/demo/client/pageobjects/DemoApplication.java
	gwt-d3-demo/src/test/java/com/github/gwtd3/demo/client/pageobjects/DemoDragMultiple.java
	gwt-d3-demo/src/test/java/com/github/gwtd3/demo/client/pageobjects/NavigationButton.java
	gwt-d3-demo/src/test/java/com/github/gwtd3/demo/client/pageobjects/TestSuiteScreen.java
	gwt-d3-demo/src/test/java/com/github/gwtd3/demo/client/testcases/AbstractSeleniumTest.java
	gwt-d3-demo/src/test/java/com/github/gwtd3/demo/client/testcases/TestCases.java
	gwt-d3-demo/src/test/java/com/github/gwtd3/demo/client/testcases/TestDragMultiples.java
	gwt-d3-ui/src/main/java/com/github/gwtd3/ui/Slider.java
	gwt-d3-ui/src/main/java/com/github/gwtd3/ui/chart/BaseChart.java
	gwt-d3-ui/src/main/java/com/github/gwtd3/ui/chart/ClipPath.java
	gwt-d3-ui/src/main/java/com/github/gwtd3/ui/chart/DragSupport.java
	gwt-d3-ui/src/main/java/com/github/gwtd3/ui/chart/LineChart.css
	gwt-d3-ui/src/main/java/com/github/gwtd3/ui/chart/LineChart.java
	gwt-d3-ui/src/main/java/com/github/gwtd3/ui/chart/LineGenerator.java
	gwt-d3-ui/src/main/java/com/github/gwtd3/ui/data/DefaultSelectionUpdater.java
	gwt-d3-ui/src/main/java/com/github/gwtd3/ui/data/SelectionDataJoiner.java
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