StyleFrame.read_excel ignores skipped rows

[DeepSpace2]

StyleFrame.read_excel ignores skipped rows (either if passed explicitly or if pandas.read_excel automatically skipped empty rows). This results in rows getting the style of the previous row.

The first case can be solved, second will probably be harder. Related to #44.

[stale]

This issue has been automatically marked as stale because it has not had activity in the last 60 days.