4 Nov 2010
Additional options to gcIntermediate and greatCircle to return SpatalLines (that are cut in two when crossing the date line)

8 Sept 2010
bug fix in .pointsToMatrix (reported by Joe)

26 August 2010
New functions:
dist2Line computes the (spherical) distance between points and polylines (and polygons borders).
makeLine (like makePoly), adds intermediate great circle points to line segments, for better plotting
onGreatCircle tests if points are on a specified great circle

25 August 2010
distVincentyEllipsoid now handles NA values. Bug fix suggested by George Wang.
