message: Less of a claim in congress for ever owning a city if it was owned long ago
diff: @@ -1084,6 +1084,7 @@ class Congress:
  # ever owned
  if not bRecolonise and city.isEverOwned(iPlayer):
  iValue += 3
  + iValue -= min(3, since(city.getGameTurnPlayerLost(iPlayer)) / turns(100))
  # own core
  if plot.isCore(iPlayer):
  