Peter M. Groen / oletools

python3.5 compliant only

…upport tricky edge cases exploited by malware

Relaxed checking opt

Unicode vba stream names

made all Exceptions subclasses of OlevbaBaseException,
move some common functionality there

use new uni_out instead of repr() to make unicode output save for shells

Robustify extact vba

We have one example files, where openstream() fails in 3 out of 10 modules,
but of course MS office (and even LibreOffice) ignore this.

Fix --deobf option for JSON output