Merge branch 'maint-0.3.1' into maint-0.3.2

changes/bug26158

-   o Minor bugfixes (relay):
+  o Minor bugfixes (relay):
      - Relays now correctly block attempts to re-extend to the previous
        relay by Ed25519 identity. Previously they would warn in this case,
        but not actually reject the attempt. Fixes bug 26158; bugfix on