Sometimes SpreadsheetExtractionAlgorithm ignores last row.

[esencu]

This code in Tabula.PageArea.GetArea method adds to PageArea instance horizontal ruling from right to left

tabula-sharp/Tabula/PageArea.cs

Lines 161 to 163 in fe6e6e5

	rv.AddRuling(new Ruling(
	new PdfPoint(rv.Right, rv.Bottom),
	new PdfPoint(rv.Left, rv.Bottom)));

.
It leads to situation when Tabula.Ruling.SortObjectComparer order objects in invalid order.
As a result, the list of intersection is returned by Tabula.Ruling.FindIntersections is invalid and result of Tabula.Extractors.SpreadsheetExtractionAlgorithm.FindCells does not contains some cells that it should.

As a fix:
Fix Tabula.PageArea.GetArea method

rv.AddRuling(new Ruling(
    new PdfPoint(rv.Left, rv.Bottom),
    new PdfPoint(rv.Right, rv.Bottom)));