this is done by this script:
ack -c "World.h" | ack :1 | sed 's/:1//' | xargs grep -c sWorld | grep :0 | sed 's/:0//' | xargs sed -i '/#include "World.h"/d'
i didn't checked every change but gcc haven't complained
* Mark spells learned in result character creating, another spell learning, skill grow,
quest reward as dependent and not store its in `character_spell`.
* Prevent re-learning known spell in expected state
* Prevent re-learning low rank spell as active if higher rank known.
* New type of non-stacked ranked spells check: skill dependent spell bonuses.
* Activate (show propetly and cast if need) lesser spell rank
for non-stackable in spellbooks spells at unlearn high rank
