split_edge Creates Non-Triangular Faces on TriMeshes
PolyConnectivity implements the two methods split_edge(EdgeHandle, VertexHandle) and split_edge_copy(EdgeHandle, VertexHandle) which split an edge without splitting the incident faces, thus increasing the valence of the incident faces by one.
TriConnectivity implements the two similar methods split(EdgeHandle, VertexHandle) and split_copy(EdgeHandle, VertexHandle) which do split the incident faces, thus performing a 2 to 4 split (or 1 to 2 split on boundaries) as expected.
Since TriConnectivity publicly inherits from PolyConnectivity, split_edge can be called on a TriConnectivity resulting in non-triangular faces.
Should we add split_edge and split_edge_copy methods to TriConnectivity which call split and split_edge to prevent this?