apburt/treeseg: v0.2.2

This release includes a tutorial demonstrating the usage of treeseg.

segmentstem and getcrownvolume have been reimplemented to provide more robust results. segmentstem no longer attempts to locate the base of the crown, and its output can contain some branching. The base of the volume segmented by getcrownvolume is now user-defined (e.g., 0.66 * the height of the cloud output from segmentstem). These stem and crown clouds are then concatenated, with any duplicate points removed using the new removeDuplicatePoints function.

The buildTree function now precalculates whether the bounding boxes of each region intersect via the new precalculateIntersections function. This decreases compute time at the expense of increased RAM requirements. There is substantial scope to optimise this function.

The stems output from findstems are now ordered descending by diameter.