Potential enhancement: LicenseCompareHelper.isTextStandardLicense().getDifferenceMessage() should sort by line then column

[pmonks]

Currently org.spdx.utility.compare.LicenseCompareHelper.isTextStandardLicense().getDifferenceMessage() will list each difference in a seemingly random order, but it would be beneficial if instead they were sorted by line number and then by column number, for readability.