7.34 line spacing???
From the changelog...
Conversion pipeline: Add an option to set the minimum line height of all elemnts as a percentage of the computed font size. By default, calibre now sets the line height to 120% of the computed font size.
Why? I don't want the line height set to 120% or for that matter any %. I don't want line-height CSS added. If this does add line-height, can this be turned off by default?