message: Increase Caravel strength to 6
diff: <DomainCargo>DOMAIN_LAND</DomainCargo>
  <iCargo>1</iCargo>
  <iAsset>2</iAsset>
  - <iPower>3</iPower>
  + <iPower>6</iPower>
  <UnitMeshGroups>
  <iGroupSize>1</iGroupSize>
  <fMaxSpeed>2.25</fMaxSpeed>
  <iMinAreaSize>20</iMinAreaSize>
  <iMoves>5</iMoves>
  <iNukeRange>-1</iNukeRange>
  - <iCombat>3</iCombat>
  + <iCombat>6</iCombat>
  <iCombatLimit>100</iCombatLimit>
  <iXPValueAttack>4</iXPValueAttack>
  <iXPValueDefense>2</iXPValueDefense>
  <DomainCargo>DOMAIN_LAND</DomainCargo>
  <iCargo>2</iCargo>
  <iAsset>2</iAsset>
  - <iPower>3</iPower>
  + <iPower>6</iPower>
  <UnitMeshGroups>
  <iGroupSize>1</iGroupSize>
  <fMaxSpeed>2.25</fMaxSpeed>
  <PassableTech>TECH_CARTOGRAPHY</PassableTech>
  </FeaturePassableTech>
  </FeaturePassableTechs>
  - <iCombat>4</iCombat>
  + <iCombat>6</iCombat>
  <iCombatLimit>100</iCombatLimit>
  <iXPValueAttack>4</iXPValueAttack>
  <iXPValueDefense>2</iXPValueDefense>
  <DomainCargo>DOMAIN_LAND</DomainCargo>
  <iCargo>2</iCargo>
  <iAsset>2</iAsset>
  - <iPower>4</iPower>
  + <iPower>6</iPower>
  <UnitMeshGroups>
  <iGroupSize>1</iGroupSize>
  <fMaxSpeed>2.25</fMaxSpeed>
  