New: Merge modifier for combining multiple hair objects
New: Edit Guides editing "multi-resolution" mode (on by default), allowing non-destructive changes to input strand structure
New: Surface dependencies are stored using minimal parametric coordinates depending on face vertex counts
New: Guide proximity mode in Hair from Guides on by default, barycentric interpolation on by default
Many internal changes

Marsel Khadiyev (Software Developer, EPHERE Inc.)