The Calibre dependency was due to the script testing for validity of the
downloaded file, as often they would be corrupted from aa. But CWA is
already doing that, so we are just having redundant code here.
For the cloudflarebypasser, I basically run my own version now, instead
of depending on an external library, this way we have better control for
debugging and on the docker image.
Fixes#18, #33, #27, #48, #65, #78, #86, #88, #89
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Co-authored-by: mik593 <91991279+mik593@users.noreply.github.com>