* The `tx` command now supports min_ledger and max_ledger fields.
* If the requested transaction isn't found and these fields are
provided, the error response indicates whether or not every
ledger in the the provided range was searched.
This fixes#2924
The ledger already declared a transaction that is both single-
and multi-signing malformed. This just adds some checking in
the signing RPC commands (like submit and sign_for) which allows
that sort of error to be identified a bit closer to the user.
In the process of adding this code a bug was found in the
RPCCall unit test. That bug is fixed as well.
The 'validation_seed' RPC command was used to change the validation
key used by a validator at runtime.
Its implementation was commented out with commit fa796a2eb5
which has been included in the codebase since the 0.30.0 release
and there are no plans to reintroduce the functionality at this
point.
Validator operators should migrate to using validator manifests
instead.
This fixes#2748.
