Use anyhow for erro handling

[j2ghz]

[codecov[bot]]

Codecov Report

Merging #72 (25df53a) into master (b26fb49) will decrease coverage by 6.72%. The diff coverage is 64.36%.

@@            Coverage Diff             @@
##           master      #72      +/-   ##
==========================================
- Coverage   67.98%   61.26%   -6.73%     
==========================================
  Files           5        5              
  Lines         431      444      +13     
  Branches       86       99      +13     
==========================================
- Hits          293      272      -21     
- Misses         81      101      +20     
- Partials       57       71      +14     

Impacted Files	Coverage Δ
src/main.rs	2.17% <0.00%> (-5.83%)	:arrow_down:
src/palettes/default.rs	100.00% <ø> (ø)
src/palettes/extended.rs	100.00% <ø> (ø)
src/lib.rs	64.50% <65.43%> (-8.17%)	:arrow_down:
src/palettes/mod.rs	75.00% <75.00%> (-4.60%)	:arrow_down:

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[coveralls]

Coverage decreased (-0.3%) to 46.766% when pulling 980790a085463daddfc7e560783ed5890641d52a on anyhow into b26fb497c53159b6a443587c6e8ca1d4ad393004 on master.