added SheetReport class

Author: alixdamman

doc/source/api.rst

@@ -682,15 +682,27 @@ ExcelReport
    :toctree: _generated/
 
    ExcelReport
-   ExcelReport.set_template_dir
-   ExcelReport.set_graph_template
+   ExcelReport.template_dir
+   ExcelReport.template
    ExcelReport.set_item_default_size
-   ExcelReport.set_sheet
-   ExcelReport.newline
-   ExcelReport.add_title
-   ExcelReport.add_graph
+   ExcelReport.new_sheet
+   ExcelReport.sheet_names
    ExcelReport.to_excel
 
+SheetReport
+===========
+
+.. autosummary::
+   :toctree: _generated/
+
+   SheetReport
+   SheetReport.template_dir
+   SheetReport.template
+   SheetReport.set_item_default_size
+   SheetReport.add_title
+   SheetReport.add_graph
+   SheetReport.newline
+
 .. _api-misc:
 
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