Move <dimension> tag to the right place
Remove theme-based colors, be explicit
Merge pull request #2 from sean-duffy/remove-slicer-style

Remove slicer style (xref sean-duffy/sqlite2xlsx#1)
Merge pull request #3 from sean-duffy/correct-place-for-dimension

Move <dimension> tag to the right place
Merge pull request #4 from sean-duffy/explicit-color

Remove theme-based colors, be explicit
Replace templating with Sprintf for cells
Reduce templating and sprintf calls in CellIndex
Remove templating for sheet end
Remove tests for old templates