CRA-505: Manual commit before pull from upstream.
CRA-530: Pull from upstream.
CRA-530: Implemented range and value to seismic-quality-grid. Moved makeCovGrid2D from background.cpp to kriging2d.cpp.
CRA-530: Small fixes.
CRA-530: Pull from upstream.
CRA-530: Merge to master.
Merge branch 'master' of git://github.com/CRAVA/crava
Merge pull request #16 from hgolsen/master

CRA-530: Implemented range and value to seismic-quality-grid.