added isSkill condition authored by Lxlp's avatar Lxlp
## Description
Checks if the number of inherited targets from the parent skilltree matches the given range.
## Attributes
| Attribute | Aliases | Description | Default |
|-----------|-----------|----------------------------------------------------------------------|---------|
| amount | a | Range of how many targets to check for | >0 |
## Examples
```yaml
Conditions:
- targets{a=>0} true
```
```yaml
Conditions:
- targets{a=0to5} true
```
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