Use Duration fields instead of DateTime fields for arithmetic.
Use Duration fields instead of DateTime fields for arithmetic.

BenJenkinson/nodatime,jskeet/nodatime,BenJenkinson/nodatime,zaccharles/nodatime,malcolmr/nodatime,zaccharles/nodatime,malcolmr/nodatime,zaccharles/nodatime,zaccharles/nodatime,zaccharles/nodatime,nodatime/nodatime,malcolmr/nodatime,jskeet/nodatime,nodatime/nodatime,zaccharles/nodatime,malcolmr/nodatime