By: Michael Lynch <git@mtlynch.io>
Remove upload converter context parameter Upload converters now accept only a reader and writer. The processor no longer passes request contexts into the converter callback, and app wiring adapts the existing conversion functions at the boundary.
| Time to Start | Worker time | Duration | Time to finish | |
| Config | 15s | 5s | 5s | 21s |
| Eval | 20s | 2m20s | 2m20s | 2m41s |
| Build | 40s | 10m24s | 6m18s | 6m59s |
| Suite | 15s | 12m50s | 6m43s | 6m59s |