CRAN Version

Major changes:

• Introduce the quickStewart function that outputs stewart contour polygons easily. Ratio of potentials are allowed.
• Introduce rasterToContourPoly to replace contourStewart.
• contourStewart is now deprecated. Use rasterToContour from raster to output contour lines and rasterToContourPoly from SpatialPosition to output polygons.

Minor changes:

• A resolution is set by default in CreateGrid.
• Vignettes are updated to reflect major changes.