Merge pull request #89 from softcover/utf-8-62519814

Utf 8 62519814
Merge branch 'stable'
Open up a kramdown class to convert inline code more intelligently

[Delivers #62819586]
Issue pull request for branch 62819586-inline-codespan

[Delivers #62819586](https://www.pivotaltracker.com/story/show/62819586)
[#62819586]

* 62819586-inline-codespan:
  Issue pull request for branch 62819586-inline-codespan
  Open up a kramdown class to convert inline code more intelligently
  Bump version number
  Issue pull request for branch utf-8-62519814
  Add support for UTF-8 in title, etc., & custom chaptername
  Add support for tabularx environments
  Polish
  Bump version number
  Issue pull request for branch doublebackslash-62685096
  Add support for \\ in Markdown
  Bump version number
  Issue pull request for branch 62668410-pdf-png
  Support PDF images in PDF output, PNG otherwise
  Bump version number
  Issue pull request for branch unicode-highlight-cache-62434202-62433730
  Escape, yet again, some gorram backslashes
  Fix the failing test
  Add failing test for weird code
  Unpack with the right encoding
  Write failing test for Unicode highlighting
Handle percents in link URLs properly

[Delivers #62858372]
Issue pull request for branch 62858372-links-percents

[Delivers #62858372](https://www.pivotaltracker.com/story/show/62858372)
Make anal changes
Merge pull request #91 from softcover/62858372-links-percents

62858372 links percents
Read the PolyTeXnic styles directly from the gem
Add chapter* to table of contents

[#62963228]
Issue pull request for branch chapter-toc-62963228
Handle inline graphics correctly

[Delivers #62972972]
Use \includegraphics for inline images

[Delivers #62972972]
Omit colon in captions with only a label

[Delivers #62973876]
Add some failing tests

[#62973860]
Override convert_standalone_image

[Delivers #62973860 #62973874]
Issue pull request for branch centered-image-no-caption-62973860

[Delivers #62973860](https://www.pivotaltracker.com/story/show/62973860)
[Delivers #62973874](https://www.pivotaltracker.com/story/show/62973874)
[Delivers #62973876](https://www.pivotaltracker.com/story/show/62973876)
[Delivers #62972972](https://www.pivotaltracker.com/story/show/62972972)
Speed up label detection using a global salt

[#62973860]
Support multiline embedded equations

[Delivers #62999446]