Substreams fixes
Note All caches for stores using the updatePolicy
set_sum(added in substreams v1.7.0) and modules that depend on them will need to be deleted, since they may contain bad data.
- Fix bad data in stores using
set_sumpolicy: squashing of store segments incorrectly "summed" some values that should have been "set" if the last event for a key on this segment was a "sum" - Fix small bug making some requests in development-mode slow to start (when starting close to the module initialBlock with a store that doesn't start on a boundary)