iOS SDK 4.4 Compiler Error

I tried to use Piwik iOS SDK 4.4. Unfortunatelly I got a Compiler Error:

Pods/PiwikTracker/PiwikTracker/Application.swift:4:27: 'bundleDisplayNameForCurrentApplication' is inaccessible due to 'private' protection level

I use Xcode 9.1.

Solution:
private methods from extensions should be fileprivate

Hi @Martin_Krajcir, thanks for you message here. Can you be so kind and file a bug report on the GitHub repo?