Auto registration of new custom columns from plugin code [question/feature request]]
Is it posiible to write a Calibre plugin that would automatically ask Calibre to create some new custom columns?
For example: i have some download metadata plugin "A". This plugin has a configuration option: Fetch number of ratings: true/false. If user enables this option i would like plugin "A" to automatically ask Calibre to create/register new custom column "number_of_ratings" if it does not exist already
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