Added skeleton of class IndentedPrintDecorator
Added test of an empty string
Now also test the return value
Added a test of an empty object
Test with an empty array
Test an object with one member
Fixed empty object output
Test an object with two memebrs
Test an object with comma, quote and column in the value
Added a space before the object's values
Tests empty nested objects in objects
Splitted the indentation tests into 3 files
Test nested objects
Test an array with one element
Test array with 2 elements
Test empty nested arrays
Test nested arrays
Added JsonPrintable.prettyPrintTo(Print&)
Renamed IndentedPrintDecorator to PrettyPrintDecorator
Refactoring...