Merge pull request stleary#93 from meiskalt7/xsiNilToNull

add test for xsi:nil to null conversion

Merge pull request stleary#86 from strkkk/add-isEmpty-method-usage

add usage of isEmpty method

Merge pull request stleary#81 from johnjaylward/FixFalsePositiveSimilar

Test cases to verify Similar methods

Merge pull request stleary#79 from johnjaylward/FixXMLUnescape

New tests for XML unescaping

Merge pull request stleary#79 from johnjaylward/FixXMLUnescape

New tests for XML unescaping

Merge pull request stleary#69 from johnjaylward/TestCleanup

Couple of the files were difficult to identify the changes, but it was worth it to add the new tests. Thanks!!!

Merge pull request stleary#55 from johnjaylward/verifyOptMissingKeys

Updates tests to include all opt methods and verify for missing keys.

Merge pull request stleary#52 from johnjaylward/OptionalTypeConversion

updates Test cases to support new JSONML and XML conversion options

Merge pull request stleary#39 from johnjaylward/FixNegativeZero

Fix negative zero

Merge pull request stleary#30 from stleary/confirmValueToStringFix

Fix tabs, add valueToString() test to JSONObjectTest