We still support them (by computing them on-demand) and caching them with `--cache-merkle-proofs`.
Also, don't compute block's txids if we don't cache merkle proofs during subscription
3ce23ae01e (r59562642)
This implements automatic reindexing of old database, turned on by
default. When an old database is detected and `auto_reindex` is turned
on the database will be destroyed so that `electrs` can re-sync. The
user can still turn this off to check db format.
The help message says "or inconsistent" - this is not implemented but we
could in the future and it seems reasonable to explicitly state that
this option will control that thing as well.
Note: 0.8.x versions of `electrs` didn't contain format information -
so we check if the database is empty and assuming it's legacy if it's
not empty but without format information.
The code is also restructured a bit and a few tests are added.