added support for special chars (#309)

[99NIMI]

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[codecov-commenter]

Codecov Report

Merging #321 (098983a) into master (b1e7694) will increase coverage by 0.00%.
The diff coverage is 96.72%.

❗ Current head 098983a differs from pull request most recent head 47f9368. Consider uploading reports for the commit 47f9368 to get more accurate results

@@           Coverage Diff           @@
##           master     #321   +/-   ##
=======================================
  Coverage   94.94%   94.94%           
=======================================
  Files          45       45           
  Lines       13046    13106   +60     
=======================================
+ Hits        12386    12444   +58     
- Misses        660      662    +2     

Impacted Files	Coverage Δ
src/parser/expressions_parser.rs	94.01% <96.72%> (+0.24%)	⬆️

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