* Add getConfirmedSignaturesForAddress2 RPC method (cherry picked from commit1b2276520b) * Reimplement transaction-history command with getConfirmedSignaturesForAddress2 (cherry picked from commit087fd32ce3) * Rework get_confirmed_signatures_for_address2 (cherry picked from commita11f137810) * Rename startAfter to before (cherry picked from commit02c0981ecf) Co-authored-by: Michael Vines <mvines@gmail.com>