Move "Fix for \a or \v, because Java does not recognize in strings" on top of develop
Merge pull request #83 from ptrstpp950/feature/problems_with_bell_char

Fix for \a or \v, because Java does not recognize in strings
updating poms for issue82 branch
moved unit test
fixed #82, can handle maps with empty string
struct and map use the same logic to determine if an object is a null, considering also an empty string / string of only spaces as a null
Merge branch 'feature/issue82' into develop
merging feature/issue82' into develop