[Feature Request] match coords

[elhertz]

In this example config, mobs between y:-1 and y:-63 would spawn at level 10

  "dimensions": [
    {
      "world_matches": {
        "dimension_regex": "minecraft:overworld"
      },
      "zones": [
        {
          "zone_matches": {
            "coords": {
              "from": {
                "x_regex": ".*",
                "y_regex": "-1",
                "z_regex": ".*"
              },
              "to": {
                "x_regex": ".*",
                "y_regex": "-63",
                "z_regex": ".*"
              }
            }
          },
          "difficulty": {
            "name": "normal",
            "level": 10
          }
        },

This will also allow you to deliberately make a region where special mobs would spawn and maybe you could make some kind of dungeon of your own