added isSkill condition authored by Lxlp's avatar Lxlp
## Description
Tests if the target's target is within a certain distance.
## Attributes
| Attribute | Aliases | Description | Default |
|-----------|-----------|----------------------------------------------------------------------|---------|
| distance | d | Distance to check | 0 |
## Examples
```yaml
Conditions:
- targetwithin{d=10} true
```
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