#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 ...
Fix view not updating when Model is changed.

Consider the following binding

```
plotView.SetBinding(PlotView.ModelProperty, "PlotModel");
```

This updates the model when the property is changed in the ViewModel. However these changes are not reflected in the View. When adding `SetNeedsLayout` after the Model is set in the code. The changes now reflects in the UI.
Merge pull request #262 from david-laundav/patch-1

Fix view not updating when Model is changed.
Fixed tracker text for interpolated points in stair step series
Merge pull request #263 from mirolev/trackertext

Fixed tracker text for interpolated points in stair step series
Added gitlink to build script
Updated AppVeyor script
Added pdb file generation for example library
Removed unnecessary solution configurations
Added explicit directory to appveyor script
Dummy checking to start a new build
Added debug switch to GitLink to test why output directory isn't correctly used
Test with updated toolsversion
Added explicit platform name for GitLink
Removed unnecessary build parameters
Merge pull request #267 from GeertvanHorrik/pr/gitlink

Added GitLink to appveyor script
#275 Added delta values to AxisChangedEventArgs