Write failing test for Unicode highlighting

[#62434202 #62433730]
Unpack with the right encoding

[Delivers #62434202 #62433730]
Add failing test for weird code

[#62454210]
Fix the failing test

[#62454210]
Escape, yet again, some gorram backslashes

[Delivers #62454210]
[#62454210]

* weird-code-62454210:
  Escape, yet again, some gorram backslashes
  Fix the failing test
  Add failing test for weird code
Issue pull request for branch unicode-highlight-cache-62434202-62433730

[Delivers #62454210](https://www.pivotaltracker.com/story/show/62454210)
[Delivers #62434202](https://www.pivotaltracker.com/story/show/62434202)
[Delivers #62433730](https://www.pivotaltracker.com/story/show/62433730)
[Delivers #62358298](https://www.pivotaltracker.com/story/show/62358298)
[Delivers #62352812](https://www.pivotaltracker.com/story/show/62352812)
[#62434202 #62433730]

* unicode-highlight-cache-62434202-62433730:
  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
  Refactor tralics switcher
Bump version number
Merge branch 'stable' into 62668410-pdf-png