Pyspellchecker

* Update `en`, `es`, `fr`, and `it` to include country names; see [issue 168](https://github.com/barrust/pyspellchecker/issues/168)

* Leveraged the dictionary files from [levidromelist](https://www.levidromelist.com/levidrome-list/dictionary) to attempt to clean up the `en`, `es`, `fr`, `pt`, `'de`, and `nl`dictionaries; Attempts to resolve issues #164, 155, 150, 140, 115, and 107; see [issue 126](https://github.com/barrust/pyspellchecker/issues/126)
* Added `Italian` language support; see [167](https://github.com/barrust/pyspellchecker/pull/167)

* Remove relative imports in favor of absolute imports
* Add `Path` support for files
* Added `Dutch` language support; see [162](https://github.com/barrust/pyspellchecker/pull/162)

* Added `Latvian` language support; see [145](https://github.com/barrust/pyspellchecker/pull/145)
* Added `Basque` language support; see [146](https://github.com/barrust/pyspellchecker/pull/146)


v0.7.1-fix
* Add `py.typed` to enable mypy support

* Backwards Combatibility Change:
* `spell.candidates` and `spell.correction` now return `None` if there are no valid corrections or candidates
* Remove misspelled words from [issue 120](https://github.com/barrust/pyspellchecker/issues/120)
* Update all default language dictionaries after updating the minimum frequency to 50 in `scripts/build_dictionary.py`
* Fix float("nan") issue; see [125](https://github.com/barrust/pyspellchecker/issues/125)
* Include [Wikipedia's common typo list](https://en.wikipedia.org/wiki/Wikipedia:Lists_of_common_misspellings/For_machines) to the exclude listing; see [#124](https://github.com/barrust/pyspellchecker/issues/124)
* Add `Arabic` language support; see [129](https://github.com/barrust/pyspellchecker/pull/129)
* Add ability to add the same word many times; see [132](https://github.com/barrust/pyspellchecker/pull/132)

* Added class method to be able to get a listing of all supported languages
* Added type hinting
* Updated English dictionary to remove incorrect `cie` words; see [112](https://github.com/barrust/pyspellchecker/issues/112)