Perk system update:
This week I have implemented a system of perks with all features. Immediately I warn you, the icons of perks are not final and will be changed, and the perks will be balanced.

1) Perks: added perks system, which allows you to "buy" the player special skills that improve the characteristics of your hero.
- Added the ability to purchase perks.
- Added effect on character stats.
- Added opening perks when you buy previous ones.
- Fixed recalculation of attribute values to avoid future problems with perks (stats).

2) Interface:
- Added attributes to the book.
- Added indicators of health, mana, stamina with values in the book.
- Added stats / perks tabs in the book.

In general, I plan to implement all the major RPG elements for this month. And in the following month (I hope even earlier) to return to the content and girls:}