#275 Added delta values to AxisChangedEventArgs
Fixed build (updated comments)
Better handling of deltas when View min/max is unknown
Add missing OxyPlot.Xwt solution files
Updated docs to fix build
Changes after code review:
* Removed GetMinimum() and GetMaximum() methods (replaced by ActualMinimum and ActualMaximum)
* Changed the delta calculation (ActualMinimum - oldActualMinimum)
* Added missing event in Axis.Zoom(double)
Added delta calculations to Axis.Reset
Merge pull request #276 from GeertvanHorrik/pr/deltaeventargs

Added delta values to AxisChangedEventArgs
Add Xwt tracker support and zoom rect configuration
Add OcxPlot.Xtw to AppVeyor
Merge remote-tracking branch 'upstream/develop' into add-xwt-support
Add git submodule to appveyor script
Let GitLink ignore Xwt
Add Xwt.Mac configurations and examples
Add NuGet configuration for OxyPlot.Xwt
Fix dashed lines drawing with Xwt
Fixed floating point noise accumulation in axis marks
Made stylecop happy
Fixed loop condition in Axis tick generation
Merge pull request #284 from sevoku/add-xwt-support

Update Xwt support (add Tracker support, other fixes)