Increased Test Coverage

[mlavin]

Increasing the test coverage to work towards Python 3 support (might need to switch RRD library) and Tornado support. Found a bug which must have existed since this project was created of mutating a shared list 😞

[codecov-io]

Codecov Report

Merging #23 into master will increase coverage by 38.21%.
The diff coverage is 100%.

@@             Coverage Diff             @@
##           master      #23       +/-   ##
===========================================
+ Coverage    50.4%   88.61%   +38.21%     
===========================================
  Files           3        3               
  Lines         125      123        -2     
  Branches       17       16        -1     
===========================================
+ Hits           63      109       +46     
+ Misses         61       14       -47     
+ Partials        1        0        -1

Impacted Files	Coverage Δ
sickmuse/app.py	78.12% <100%> (+21.4%)	⬆️
sickmuse/handlers.py	100% <100%> (+57.89%)	⬆️

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