* Compares two version string. If version1 is higher than version2 a positive result is returned.
* If both are equal 0 is returned, otherwise -1 is returned.
* @see Comparator#compare(Object, Object)
* Compares two version string. If version1 is higher than version2 a positive result is returned.
* If both are equal 0 is returned, otherwise -1 is returned.
* @see Comparator#compare(Object, Object)