Call to undefined method mergeConfigFrom

I installed ```"pragmarx/tracker": "2.0.10",``` on Laravel 4.2 after adding ```'PragmaRX\Tracker\Vendor\Laravel\ServiceProvider',``` to the providers, i got
```
Call to undefined method PragmaRX\Tracker\Vendor\Laravel\ServiceProvider::mergeConfigFrom()
```
Am i doing something wrong?

Start by reproducing the installation with pragmarx/tracker 2.0.10 on Laravel 4.2 and inspect PragmaRX\Tracker\Vendor\Laravel\ServiceProvider. Compare the provider's configuration API with the APIs available in Laravel 4.2. Done means the package either installs without this error on Laravel 4.2 or clearly documents the supported Laravel version.

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