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This PR alters the sort-algorithm used for testing which before was based on the position of the entry in the array and is now solely based on the value itself.
Due to changes in PHP7 sorting based on the key of the value was not working in PHP7 as it was in PHP5 so there was need for a change.
Now the values are sorted by the number of "1" in the binary representation of the value. If that is equals the natural sorting algorithm is used.
This also fixes #32