New functions:
compute.distances() #complete set of distances for given coordinates
find.edges() # edges of a mask in 3d
find.max.line() # find lines with maximum length in object masks
is.line() # returns true, if line between coordinates is in object
Re-written:
bwlabel3d() # finds connected objects in 3d, based on EBImage bwlabel()

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/bioimagetools@111 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
version -> 0.02.21

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/bioimagetools@112 edb9625f-4e0d-4859-8d74-9fd3b1da38cb