More tests + bug fixes for line in polygon computation

[harsha2010]

No description provided.

[codecov-io]

Codecov Report

Merging #89 into master will increase coverage by -0.33%.

@@            Coverage Diff             @@
##           master      #89      +/-   ##
==========================================
- Coverage   76.16%   75.83%   -0.33%     
==========================================
  Files          35       35              
  Lines        1049     1163     +114     
  Branches       67       90      +23     
==========================================
+ Hits          799      882      +83     
- Misses        250      281      +31

Impacted Files	Coverage Δ
src/main/scala/magellan/Line.scala	91.22% <100%> (+7.35%)	✅
src/main/scala/magellan/Shape.scala	34.09% <50%> (+1.59%)	✅
src/main/scala/magellan/Polygon.scala	79.5% <84.4%> (-15.31%)	❌

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