Bug fixing, skills and pets

The following bugs have been fixed:

1. Falling out through textures. This sometimes happened when killing a small enemy (such as a rat) underfoot with a melee weapon. Now you shouldn't accidentally fall through the floor.
2. Stacking things in the inventory. Occurred when transferring items from the chest with the right mouse button to the portrait of the hero. The thing was transferred to the inventory incorrectly and then caused overlaps on other things and the inability to correctly load next location.
3. Some locations were not loaded. It was an indirect consequence of the previous error.
4. Enemies shot at the hero and his pets (ents, skeleton, golem, bear, etc) through the walls. Now enemies can't do that! )
5. Accumulation of parameters. With a long game, it was possible to notice that the heroes somehow have too many basic parameters: strength, body, intelligence, speed, luck. Now this is no longer there.
6. Inability to sometimes take a thing in the chest. It occurs when all heroes are inactive. Now the inactivity of heroes does not affect this.
7. Taking inaccessible skills. You could drag an inaccessible skill onto the command bar and use it. This has now been fixed.
8. Take things from the trader for free. You could take any item from the trader for free without buying it, just dragging it into your inventory. This has now been fixed.
9. Exclamation marks at the NPC. Earlier, after completing the quest, these signs still remained on the NPC. Now, if the NPC does not have important messages, the exclamation mark is removed.
10. Incorrect work of some skills. Many skills have been fixed that either did not work or worked incorrectly before: for example, double jump, sacrifice and some others.
11. Failure to save the names and portraits of the characters of the party. When loading a save game, the character names and portraits were reset to default. This now works correctly.
12. Final score. There were scoring errors. And the final window could not be closed: the game would freeze. It's all fixed now.
13. Invisible enemies. In some locations (especially in the Earth Templef), one could meet invisible enemies, which, of course, were difficult to fight with. Invisible enemies have been eliminated.
14. A hole in the wall in one of the rooms in the Earth Temple. Now this hole is gone.
15. In the tutorial location, an extra confusing audio track was removed in one of the prompting videos.
16. Some starting skills (such as feather, torch) could not be upgraded beyond the 1st level. Fixed.
17. Failure to preserve non-starting skills as active ones in heroes. Now all skills are well preserved in the active status.
18. Failure to receive an item from the boss if all the heroes in the team are unavailable (lost their turn). This has now been fixed.
19. Getting free of charge unique items from the boss killed once. This happened when exiting-entering from a location with a boss to another location and back. At the same time, the boss killed earlier gave a freebie one more unique one, and there was no need to kill him again.

Improvements 1. Skill tree. A signature was added for each skill: what is needed to get it (what level is needed and what other skill you need to have). 2. Automatic following you of your pets (ent, skeleton, golem, bear) was added. 3. Icons for improving skills. Tt was hard to tell if the ability worked or not without icons. 4. Quest tips. The text of many quests