Improve Unicode handling on Python 2

[pbaranay]

Fixes #27.

[codecov[bot]]

Codecov Report

Merging #28 into master will increase coverage by 1.62%. The diff coverage is 100%.

@@            Coverage Diff             @@
##           master      #28      +/-   ##
==========================================
+ Coverage   90.86%   92.48%   +1.62%     
==========================================
  Files           6        6              
  Lines         208      213       +5     
  Branches       34       37       +3     
==========================================
+ Hits          189      197       +8     
+ Misses         15       12       -3     
  Partials        4        4

Impacted Files	Coverage Δ
src/magic_cards/models.py	90.16% <100%> (+6.23%)	:arrow_up:

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[codecov[bot]]

Codecov Report

Merging #28 into master will increase coverage by 1.62%. The diff coverage is 100%.

@@            Coverage Diff             @@
##           master      #28      +/-   ##
==========================================
+ Coverage   90.86%   92.48%   +1.62%     
==========================================
  Files           6        6              
  Lines         208      213       +5     
  Branches       34       37       +3     
==========================================
+ Hits          189      197       +8     
+ Misses         15       12       -3     
  Partials        4        4

Impacted Files	Coverage Δ
src/magic_cards/models.py	90.16% <100%> (+6.23%)	:arrow_up:

---

Continue to review full report at Codecov.

Legend - Click here to learn more Δ = absolute <relative> (impact), ø = not affected, ? = missing data Powered by Codecov. Last update 80df71e...87f08b8. Read the comment docs.