[feature] Debuggability, options for the `/fetchattributes` API call#4

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domq wants to merge 3 commits intogcmalloc:masterfrom

domq:feature/fetchattributes-options

Commits on Jan 22, 2021

[feature] In case of /fetchattributes failure, dump response lines
Dominique Quatravaux
committed

Commits on Jan 23, 2021

[refactor] Split `fetch_attributes` into re-useable pieces
Dominique Quatravaux
committed
[feature] Ability to pass additional fetchattributes parameters
Dominique Quatravaux
committed