fix dates formatting in changelog
fix dates formatting in changelog

lautis/kefir,pixelpicosean/kefir,elsehow/kefir,hsavit1/kefir,AgentME/kefir,AyaMorisawa/kefir,AgentME/kefir,pixelpicosean/kefir,kelsadita/kefir,elsehow/kefir,kelsadita/kefir,AyaMorisawa/kefir,hsavit1/kefir,lautis/kefir