Merging method?

[henry2004y]

Hi,

Great package! I have a question regarding the available functionality: as an opposite to split!, is there a merge! method available to combine leaves together? If it hasn't existed yet, it is possible to add such method?

Something like

root = Cell(SVector(0., 0), SVector(1., 1))
split!(root) # 1 into 2x2
merge!(root) # 2x2 into 1?

[ashwanirathee]

I also think this could be very helpful with a lot of tree pruning but isn't merge! same as root.children = nothing?