Clear flags for the temporal string stream to avoid conversion errors

String stream flags were not cleared and this was causing all the
unicode characters of a string to be converted as the first encountered
unicode character.

Example:
"first á followed by é" -> was being encoded as "first á followed by á"
- now you can add elements to array in direct order, useful when you don't know what  final size of the array will be.
Merge pull request #8 from arturjpv/master

Clear flags for the temporal string stream to avoid conversion errors.
Merge branch 'master' into develop
Merge remote-tracking branch 'track3r/master' into develop