v2.7.0

This is a testing release !

Major improvements

• [enh] Support subcategories (#143)
• [enh] Remove black magic related to m18n and other things (#145)

Small improvements / fixes

• [enh] More helpers for common IO operations (#141)
• [fix] Correctly handle error 500 (#142)
• [enh] Make some part of the code more readable (#144)
• [enh] Show description of command in --help (#148)
• [i18n] Update French translation (#149)

Thanks to all contributors (Bram, Aleks, R. Cabaret) ! ❤️