v1.0.6

Added Insert chapter marker button in text editor to insert chapter markers at the current cursor position.
Added Preview button in voice mixer to preview the voice mix with the selected settings.
Fixed f-string: unmatched '[' error in Voice preview, mentioned in #14
Fixed the issue with the content before first chapter not being included in the output.
Fixed m4b chapter generation opens CMD window in Windows.

v1.0.5

Added new output format: m4b, enabling chapter metadata in audiobooks. Special thanks to @jborza for implementing this feature in PR #10.
Better approach for determining the correct configuration folder for Linux and MacOS, using platformdirs. (Fixes Docker issue #12)
Improvements in documentation and code.

Merge pull request #7 by @jborza that improves voice preview and documentation.
Fixed the issue when a voice is selected, the voice mixer tries to pre-select that voice and ignores existing profiles.
Fixed the error while renaming the default "New profile" in the voice mixer.
Fixed subtitle_combo enabling/disabling when a voice in the voice mixer is selected.
Prevented using special characters in the profile name to avoid conflicts.
Improved invalid profile handling in the voice mixer.

Added voice mixing, allowing multiple voices to be combined into a single “Mixed Voice”, a feature mentioned by @PulsarFTW in #1. Special thanks to @jborza for making this possible through his contributions in #5.
Added profile system to voice mixer, allowing users to create and manage multiple voice profiles.
Improvements in the voice mixer, mostly for organizing controls and enhancing user experience.
Added icons for flags and genders in the GUI, making it easier to identify different options.
Improved the content and chapter extraction process for EPUB files, ensuring better handling of various structures.
Switched to platformdirs for determining the correct desktop path, instead of using old methods.
Fixed preview voices was not using GPU acceleration, which was causing performance issues.
Improvements in code and documentation.

Enhanced EPUB handling by treating all items in chapter list (including anchors) as chapters, improving navigation and organization for poorly structured books, mentioned by @Darthagnon in #4
Fixed the issue with some chapters in EPUB files had missing content.
Fixed the issue with some EPUB files only having one chapter caused the program to ignore the entire book.
Fixed "utf-8' codec can't decode byte" error, mentioned by @nigelp in #3
Added "Replace single newlines with spaces" option in the menu. This can be useful for texts that have imaginary line breaks.
Improvements in code and documentation.

Added abogen-cli command for better troubleshooting and error handling.
Switched from setuptools to hatchling for packaging.
Added classifiers to the package metadata.
Fixed "No module named 'docopt'" and "setuptools.build_meta" import errors while using .bat installer in Windows, mentioned by @nigelp in #2
Improvements in code and documentation.