Collandbuild version 1.3.0

Changes: Added water ("." for a source and "," for a puddle) and primitive water physics, added crystals ("["), added a "bottle" (for collecting water; water can be collected by pressing "p" if the player has a bottle), changed the logic of the inventory and placing items (now the player can pre-select the item number using the +/- keys), slightly changed the logic of the world border (now the player and mobs are simply pushed away from the border, and not moved along the y2 x2 coordinates as before), added a new mob - "fish" (or "snake" / "toad"; the symbol "_"; this mob can only move while in water and is harmless).
Overall, there are quite a lot of changes, and I probably couldn’t fit them all in.

P.S.: This is a very large update, so I worked on it relatively diligently. Incidentally, I initially didn't want to add water to the game, and crystals were supposed to be a natural item, but then I decided to go with it.