Log Message:
libstaroffice: Update to 0.0.6

0.0.6:
- 12/17/2017:
   - all: retrieve formula and charts(as graphic)
   - .sdw: try to retrieve more attachments.

0.0.5:
- 10/30/2017:
   - require C++11 for build.

0.0.4:
- 07/15/2017:
   - correct many errors detected by fuzzing

0.0.3:
- 02/20/2017:
   - tests if the file is created by StarImpress, if yes, converts it
     in a presentation file,
   - .sdw: try to retrieve more table's formattings and some outline levels,
   - graphics: try to retrieve more embedded pictures and the textbox
     rotations.