Less than sign in threadmark title on SpaceBattles not being escaped.

[HowardJeng]

It looks like theadmarks containing a less than sign aren't being properly escaped. If I point FanFicFare 4.13.0 being run as a calibre plug-in at https://forums.spacebattles.com/threads/princess-worm-rwby.761227/, which contains a threadmark titled "Akelarre <3 Neo, by Metaphorical Grapevine" in file OEBPS/file0088.xhtml, it inserts an unescaped <3 in the title tags, which causes errors that look like "error on line 4 at column 26: StartTag: invalid element name" The specific problematic post is https://forums.spacebattles.com/posts/59187214/

[JimmXinu]

I know that html entities in chapter titles was tested in past. Since then, BeautifulSoup has changed to be more 'helpful' about removing html entities when extracting text than it used to be. I vaguely recall that it's been an issue in other contexts.

Test versions up in the usual places.