- xparse "e" type argument now generates one TeX (#) result
  per 'embellishment' (breaking change)
- Fix issue when l3regex is used with Kanji characters ((u)pTeX)
- Box affine transformations are now stable
- Rename \box_resize:Nnn => \box_resize_to_ht_plus_dp:Nnn
- Internal improvements in l3regex
- Experimental interface for setting random seed
- Tweaks to l3(x)dvipdfmx driver
- Improvements in l3build documentation for advanced use cases