"World Collision" 1.21 full release version

The description of technology and production lines adds rich text.
Optimized production line display, now you can see the unlocked production line.
After occupying the city, the city's health will return to 30%, up from 20%.
Revised the tech points needed for some technologies.
Soldiers recovering HP will consume the city's population. If the cityls population is less than 50, they will not be able to replenish.
The conditions of killing barbarians in the time quest will not be reset.
Fixed a lot of bugs.
AI will be more brave enough to attack other cities.
AI is more flexible in the choice of arms.
The war resources of AI will be bonused under high difficulty.