clip: Work on single value

[m-mohr]

The clip function works on arrays and not on a single value, which is strange as all other similar functions work on a single value.

Therefore I'd propose to change the definition to:

{
  "id": "clip",
  "summary": "Clips a value between a minimum and a maximum value.",
  "description": "Clips a number between specified minimum and maximum values. A value larger than the maximal value will have the maximal value, a value lower than minimal value will have the minimal value.",
  "categories": [
    "math"
  ],
  "parameter_order": [
    "x",
    "min",
    "max"
  ],
  "parameters": {
    "x": {
      "description": "A number.",
      "schema": {
        "type": [
          "number",
          "null"
        ]
      },
      "required": true
    },
    "min": {
      "description": "Minimum value. If the value is lower than this value, the process will return the value of this parameter.",
      "schema": {
        "type": "number"
      },
      "required": true
    },
    "max": {
      "description": "Maximum value. If the value is greater than this value, the process will return the value of this parameter.",
      "schema": {
        "type": "number"
      },
      "required": true
    }
  },
  "returns": {
    "description": "The value clipped to the specified range.",
    "schema": {
      "type": [
        "number",
        "null"
      ]
    }
  },
  "examples": [
    {
      "arguments": {
        "x": -5,
        "min": -1,
        "max": 1
      },
      "returns": -1
    },
    {
      "arguments": {
        "x": 10.001,
        "min": 1,
        "max": 10
      },
      "returns": 10
    },
    {
      "arguments": {
        "x": 0.000001,
        "min": 0,
        "max": 0.02
      },
      "returns": 0.000001
    },
    {
      "arguments": {
        "x": null,
        "min": 0,
        "max": 1
      },
      "returns": null
    }
  ]
}