163ab321

Using the new `typed-hpack` branch

This requires a number of changes to the definitions, which have also been split
apart.
Time to Start Worker time Duration Time to finish
Config 0s 1s 1s 2s
Eval 3s 6s 6s 9s
Build 10s 1m19s 3m37s 3m48s
Suite 0s 1m28s 3m47s 3m48s