Rearrange for git.
Optimize inserts. We don't need to fetch the just-inserted rows
because we have all the information needed to create the objects.
Added accessors to Arc that return an arc's related anchors, nodes,
arc_fetch() was not failing if the nodes specified were not found.
Rather, the not-found nodes became wildcards... definitely not useful.
Add a command to create a new node. Do not always rebuild the database.
arc_from_arcs() and arc_add() return lists.
Fix tab damage.
Repair tab damage.
Fix tabs vs. spaces. Tell Subversion to expand Id tags.