Log Message:
Update to 0.1.3

Changelog:
libe-book 0.1.3

- Fix various problems when reading broken files, found with the help of
  american-fuzzy-lop and oss-fuzz.
- Fix build with boost >= 1.59.
- Set default page margins. (tdf#94162)
- Make output of ebook2* --help more compatible with help2man.
- Check for librevenge-stream if tests are enabled. (gentoo#603098)
- Require C++11 for build.
- Drop outdated MSVC project files.
- Fix several issues found by Coverity.
- FictionBook v.2:
  + Use document language as default language for text.
  + Use note title as footnote mark.
  + Handle subscript and superscript.
  + Output content of <code> in monospace font.