[#106] Make sure our paths in fixtures contain utf8

[elbenfreund]

in order to have confidence in our ability to handle utf8 path location
we just add random utf8 string named sub-dirs to our path fixtures.

Closes: #106

[elbenfreund]

It seems our code itself is perfectly able to deal with unicode paths. However, when creating an sqlachemy sqlite engine with an unicode path hamsterlib ends up generating a UnicodeError when calling repr(engine) in its attempt to write the engine name to log.
See the hamsterlib issue

[codecov-io]

Current coverage is 97.33%

Merging #161 into develop will increase coverage by +<.01%

@@            develop       #161   diff @@
==========================================
  Files             3          3          
  Lines           372        374     +2   
  Methods           0          0          
  Messages          0          0          
  Branches         33         33          
==========================================
+ Hits            362        364     +2   
  Misses            6          6          
  Partials          4          4          

Powered by Codecov. Last updated by d4bc7ae