* use newer string formatters (https://pyformat.info)
* fix typo
* went through the files again, additions from #1165 are also included
* replace .format() with f strings
* Fixed scripts in examples directory that didn't work, deleted any redundant examples.
* Added examples for methods related to audiobooks, shows and episodes
* Updated changelog
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Co-authored-by: Stéphane Bruckert <stephane.bruckert@gmail.com>