Its been mentioned that full HTML will be accessible in the next update. Cool! I do have a question and sorry if tis already been asked and I just can't find it: Will that also mean access to a sheet- or stack-wide style sheet?
Actually, we don't have plans to make HTML an export format yet. What you will be able to do is insert HTML tags in regular text and it will be converted to HTML during ePub export (since ePub consists of HTML pages). However, HTML should be relatively easy to add in the future. Nonetheless, we won't include support for editing style sheets in Daedalus, sorry.