====== Ranger ======
  * animal companion can be summoned at level 4
  * animal companion level is equal to the sum of ranger+druid levels
  * favored enemy bonus is +2 instead of +1 at pre-epic levels
  * each favoured enemy gives +1 bonus vs. FE
  * gains Woodland Stride at 7
  * gains Evasion at 9
  * gains Hide in Plain Sight at 17
  * spell selection changes: longstrider (new spell) 1, barkskin 2, owls wisdom 2, endurance 2, spike growth 2