3.0.1

• Removed Python 2.7 support

• Added Python 3.8 support

• Renamed package name to styleframe (all lowercase) in accordance of PEP8

• Added .style accessor. This allows for easy selection/indexing based on style, for example:
  sf.loc[sf['col_name'].style.bg_color == utils.colors.yellow]

  or

  sf.loc[~sf['col_name'].style.bold]

• Added default_grid to utils.borders to allow usage of the default spreadsheet grid

• Added read_excel_as_template method

• Fixed a bug that prevented saving if read_excel was used with use_openpxl_style=True, see github issue #67

• Allowing usage of pathlib.Path in to_excel, see github issue #69

• Added ability to execute the tests from the commandline: styleframe --test