New keyword PVDO
Added keywords for SPE9.
Merge pull request #160 from joakim-hove/SPE9-keywords

Added keywords for SPE9.
Merge pull request #161 from osae/kw-PVDO

New keyword PVDO
Changed unit in PVTG.
Merge pull request #162 from joakim-hove/PVTG-unit-change

Changed unit in PVTG.