Added HeroInfo and AbilityInfo classes. These classes can be used to get ability info, such as if an ability is stun, can make someone invis, etc, for heroes.
Added HeroData for Accursed.
Added HeroData for Aluna.
Added HeroData for Tempest.
Added HeroData for Keeper of the Forest.
Cleaned up HeroInfo and AbilityInfo classes. Added HeroInfo:Has(sAction) function which can be used to see if any of the abilities has a "Can" property set to true. e.g. heroInfo:Has('Stun') will return true if the hero can stun with one or more abilities.
Added line break to the end of all HeroData files.