fix(parser): don't eat not allowed tags

[JiLiZART]

Fixes #54

[codecov-io]

Codecov Report

Merging #58 into master will decrease coverage by 0.32%.
The diff coverage is 96.77%.

@@            Coverage Diff             @@
##           master      #58      +/-   ##
==========================================
- Coverage   93.33%   93.00%   -0.33%     
==========================================
  Files          15       15              
  Lines         510      529      +19     
  Branches      116      120       +4     
==========================================
+ Hits          476      492      +16     
- Misses         28       30       +2     
- Partials        6        7       +1     

Impacted Files	Coverage Δ
packages/bbob-plugin-helper/src/TagNode.js	78.57% <94.11%> (+17.03%)	⬆️
packages/bbob-parser/src/parse.js	94.25% <100.00%> (-2.14%)	⬇️

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