dep_utils: Factor out primary summary logic into its own dist.
v2.016004

 [00 Minor]
 - dep_utils: Factor out primary summary logic into its own dist.

 [Dependencies::Stats]
 - Dependencies changed since 2.016003, see misc/*.deps* for details
 - develop: ↑1
 - runtime: ↑1 (recommends: +1)
Post-release cleanup