Kylian Ronfleux--Corail comments

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                                            Kylian Ronfleux--Corail

Fix qtables and quality scaling

This behavior is defined directly in the libjpeg-turbo source code. In [jcparam.c](https://github.com/libjpeg-turbo/libjpeg-turbo/blob/2a0c86278249e7a3c3429caff24c06a50048d772/src/jcparam.c#L142-L147), it is explicitly stated: ```c /* The basic table is used as-is (scaling 100) for a quality of...

Fix qtables and quality scaling

I found the problem, it came from the fact that force_baseline was set to true when the qtable was not given and to false when the qtable was given so...

Fix qtables and quality scaling

And for the documentation, the quality parameters seem good to me, it's more qtables that need to be modified, adding the fact that they are modified by the quality parameters...

Fix qtables and quality scaling

@radarhere is it ok with you or are there still things you want me to correct?

Fix qtables and quality scaling

Hello yes save with qtables and no quality use the qtable without changing it and giving no qtable and no quality will take the standard qtables from jpeg standard at...

Fix qtables and quality scaling

@radarhere do you have more questions?

Allow naming matrix expansions

Thanks for the quick review! I understand the hesitation about extending the schema. I’ll open a feature request describing our use case, the pain points we’re running into, and why...