Add Russian and Ukrainian languages
Convert only HTTP entities
Make document utf8 by default
Remove meta tags, they're not required
UTF-8 compatibility hacks

- Make UTF8 default encoding
- Enable multibyte characters overlap trailing entries
Handle multibyte overlap entries
Fix iso2hex namespace and use required module
Add support for covers
HACK: properly setup filepos in for multibyte text
Make TOC entry regexp metacharacter-proof
Fixup anchors for notes