Changes

This is a type of [http://en.wikipedia.org/wiki/Timeline timeline tree].

TimeNets, enable analysis of families over time, by prioritize temporal relationships, in addition to the family structure.Individuals are represented using timelines that converge and diverge to indicate marriage and divorce; directional edges connect parents and chil-dren. Note: [http://sourceforge.net/p/gramps/mailman/message/26817177/ Wilfried Trabold] pointed this out on the gramps-users mailing list in December 2010. Gerald Britton[http://sourceforge.net/p/gramps/mailman/message/26817266/] was in a side-discussion with the authors to explore the possibility of working together to include this in Gramps.