JSON Utility - Release Notes

2.7.0
    * No changes

2.6.0
    * Security updates
    * Architecture change to make lang.JSON object more durable
    * stringify whitelist keys scrubbed for duplicates
    * Object keys sorted in stringify

2.5.1
    * Updated validation regex to address poor unicode escape treatment in FF
    * Updated special characters RegExp
    * Changed stringification to account for odd responses to typeof

2.5.0
    * Restructured for customization and readability
    * Extracted isValid method to test a JSON string
    * Extracted dateToString method to allow overriding with custom serialization format
    * Added stringToDate method to reconstitute Date instances from default JSON UTC date strings.  Use this in a filter method passed to lang.JSON.parse
    * fixed walk method so filters are properly applied

2.4.0
    * Initial release
