Fixed bnc#808377 and added a brief description about qcow2
Small additions for bnc#808377
Fixed bnc#808381 and added missing types to API documentation
Merge pull request #92 from tomschr/bnc808377

Fixed bnc#808377 to add brief description about qcow2
Merge pull request #93 from tomschr/bnc808381

Fixed bnc#808381 and added missing types to API documentation