upsteam pull

Merge branch 'master' of github.com:etrepat/baum

Conflicts:
	README.md
	src/Baum/Console/InstallCommand.php
	src/Baum/Providers/BaumServiceProvider.php

1.1.1: - remove default sort from toHierarchy()

- reimplement as to toSortedHierarchy()

1.1.0

Update composer.json