Adds security note to param logging (#293)
Adds security note to param logging (#293)

Good for this to be top of mind so no one traverses as such:

```
config.lograge.custom_payload do |controller|
  exceptions = %w(controller action format authenticity_token)
  {
    params: controller.request.params.except(*exceptions), # request.params is DANGEROUS
  }
end
```

request.filtered_parameters is at least a bit safer as noted
in https://github.com/roidrage/lograge/issues/28
roidrage/lograge