added isSkill condition authored by Lxlp's avatar Lxlp
## Description
Checks if any players are within a radius of the target.
## Attributes
| Attribute | Aliases | Description | Default |
|-----------|-----------|----------------------------------------------------------------------|---------|
| distance | d | The radius to check in | 0 |
## Examples
```yaml
Conditions:
- playerwithin{d=10} true
```
## Aliases
- [x] playerswithin
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