Tools: Fixed bug in nuget pack script (after upgrade to hg)
Added .hgignore
PlotModel: Added RefreshPlot(bool updateData) method
WPF.Plot: Added support for PlotModel.RefreshPlot
Silverlight.Plot: Added support for PlotModel.RefreshPlot
WindowsForms.Plot: Added support for PlotModel.RefreshPlot

Improved locks on critical sections.

WPF.Plot: allow RefreshPlot to be called on a non-UI thread
WPF.Plot: corrected OnSizeChanged to not update data when invalidating

Added an example (WPF/RefreshDemo) showing different ways to refresh a plot.
Added TextAnnotation
BarSeries: improved min/max calculation when BaseValue != 0
CategoryAxis: initialize MinValue/MaxValue to NaN
Removed IAnnotation, IAxis and ISeries.
Use the abstract base classes Annotation, Axis and Series.
Added 6.1 Resharper settings, removed old settings
ExampleLibrary: Added TornadoBarSeriesExample
Added more patterns to .hgignore
Merged the AxisBase class into the Axis class.
Removed AxisBase.cs
AnnotationLayer: changed "OverSeries" to "AboveSeries". Added "BelowAxes".
ExampleLibrary/AnnotationExamples: added Layer example
Updated .hgignore
Added PlotELement class. This is a common base class for elements of the
PlotModel (Axes, Annotations, Series).
OxyPlot.Wpf: removed IAnnotation and ISeries
RenderingExtension: added DrawClippedText extension method
Annotations: changed to DrawClippedText
LineSeries: rendering labels
ItemsSeries: added GetItem method
BarSeries: breaking change: splitted in two classes: BarSeries and ColumnSeries
Use ColumnSeries for vertical bar charts.
Added IntervalBarSeries, RectangleBarSeries and TornadoBarSeries.