Bumping up major version due to replaced note

#24 I've decided to 'remove' the question about masks, because it dep…

…ends very much on the local context, and there are a lot of details (like the types of masks) that impinge on these guidelines that it's very hard to come to any generic guideline, 'for all'. (The question was not actually removed, because this is currently impossible with CrowdAnki; its content was simply replaced). Bumped up the major version number too.