Unogenerator

* Added to ODS.addRow, ODS.addListOfRows... a formulas parameter. By default is True and formulas are stored as formulas. If False formulas are written as text
* Coverage is 88%

**Full Changelog**: https://github.com/turulomio/unogenerator/compare/0.39.0...0.40.0

- Currency and Percentage classes are now defined in pydicts project
- Tests coverage is now 87%
- Unogenerator now needs pydicts-0.11.0
- Ods.SetCellName now accepts a coord reference instead of a Coord Object
- Created ODS.toDictionaryOfDetailedValues method to get a python dictionary of the whole calc document

- Removed statistics to improve speeds
- Added new exceptions: CoordException, RangeException
- Improve localc1989 methods and documentation
- Removed all reusing references
- Added method can_import_uno to allow programs to detect and ignore errors importing uno

- Fixed bug with addListOfRows with empty lor. Removed innecesary reusing files
- Fixed bug with addRow with empty row
- Unogenerator now uses pydicts-0.8.0. Old casts and datetime_functions removed

- Improved test coverage to 81%
- pydicts module is now used for list of dictionaries methods
- Added new methods to add values without styles. They are used to edit styled templates files. New methods: addCell, addCellMerged, addRow, addColumn, addListOfRows, addListOfColumns

- Improved get_values speed