Setting the placement target when opening the context menu.
Merge pull request #216 from Taldoras/master

Setting the placement target when opening the context menu.
Revert "Setting the placement target when opening the context menu."

This reverts commit 4875b0371175f80c98b86c114e1ff99e291164e4.
Merge branch 'develop'
Update LineSeries.cs

Prevent null reference with MVVM binding values, example:
<OxyPlot:LineSeries ItemsSource="{Binding MyIEnumerableValueCollection}"  />
Merge pull request #255 from SenenFernandez/patch-1

Update LineSeries.cs
#259 Improved rendering performance for WPF by only rendering the plots that are actually really visible to the user (this ensures major improvements in large lists)
Following Stylecop rules (member ordering)
Merge pull request #257 from oxyplot/master

Master
Merge pull request #260 from GeertvanHorrik/pr/renderperformance

#259 Improved rendering performance for WPF by only rendering the plots ...