Dataproperty

- Fix `ColumnDataProperty.merge` method
- Add `DataPropertyMatrix` to the package root
- Improve type annotations

**Full Changelog**: https://github.com/thombashi/DataProperty/compare/v1.0.0...v1.0.1

- Drop support for Python 3.6
- Modify to use `pypa/build` for package build
- Update `[build-system]`
- Add `zip_safe=False`
- Add `__all__` to `__init__.py`
- Improve type annotations
- Remove a deprecated function: `set_log_level`
- Remove `is_multibyte_str` function

**Full Changelog**: https://github.com/thombashi/DataProperty/compare/v0.55.1...v1.0.0

- Add `default_format_flags` property to `DataPropertyExtractor` class

**Full Changelog**: https://github.com/thombashi/DataProperty/compare/v0.54.2...v0.55.0

- Fix preprocess failed when the inputs are `dict`
- Fix `DataProperty.get_padding_len` method return improper length when the inputs are `dict`
- Improve converting performance

**Full Changelog**: https://github.com/thombashi/DataProperty/compare/v0.54.1...v0.54.2

- Improve `normalize_type_hint` to accept more types via strings

- Add `max_precision` property to `DataPropertyExtractor` class
- Add `dequote` method to parameter to Preprocessor class
- Modify to accept type hints as strings
- Modify type annotation of `column_type_hints` property