Version 1055 was commited by markb on 2009-06-02 11:37:43 +0100 (Tue, 02 Jun 2009) Allow for extremely uneven distribution of nodes in subdivision. The last commit croaked on subdividing a region if all of the region's nodes went into the same sub-region. That is overly restrictive because you could possibly have a rectangular region where the nodes are only in one half of the region. This new commit now detects when a sub-region becomes impossibly small rather than worrying about the distribution of nodes in the sub-regions.