fix: Handle bad input strings to decodeURIComponent

[fengmk2]

closes #18

[codecov]

Codecov Report

Merging #24 (7720132) into master (8f9308f) will increase coverage by 0.25%.
Report is 1 commits behind head on master.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master      #24      +/-   ##
==========================================
+ Coverage   85.45%   85.71%   +0.25%     
==========================================
  Files           1        1              
  Lines         220      224       +4     
  Branches       53       54       +1     
==========================================
+ Hits          188      192       +4     
  Misses         32       32              

Files	Coverage Δ
src/index.ts	85.71% <100.00%> (+0.25%)	⬆️

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[fengmk2]

After thinking about it, I don't want to do this by default. Users should implement this logic by adding a try catch outside of decode, and urlencode.decode still maintains the same error handling logic as decodeURIComponent in order to be compliant with the standard.