Updated airtests-cross-map to match cell positions expected by existing tests.
Updated air tests to load cell map from text file via map parser.
Added .gitignore.
Updated approvals files for new cell structure in which coord are stored and cell data is stored under d property.
- Updated cellmap to 0.4.0 (uses new cell structure).
- Updated airreaction to operate on cellData instead of cell.
- Started updating air tests for new cell structure and cellmap changes.