err from loadVersion should not be discarded in Apply

[metaleap]

Culprit:

eventsource/repository.go

Line 187 in 7b6859b

aggregate = r.New()

loadVersion can fail for reasons other than "not found", such as "store implementation has connectivity outage" etc. You do not want to discard such errs and fall back on a newly-instantiated empty aggregate here...

A fix to this would do so only for errs of type eventsource.Error with a Code() of eventsource.ErrAggregateNotFound I reckon? --- with all other errs being properly returned immediately.