Support a lot more character classes

[ceedubs]

Resolves #7

[codecov-io]

Codecov Report

Merging #54 into master will increase coverage by 0.21%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master      #54      +/-   ##
==========================================
+ Coverage   98.66%   98.88%   +0.21%     
==========================================
  Files          17       17              
  Lines         300      358      +58     
  Branches        8        9       +1     
==========================================
+ Hits          296      354      +58     
  Misses          4        4

Impacted Files	Coverage Δ
parser/src/main/scala/Parser.scala	100% <ø> (ø)	⬆️
regex/src/main/scala/Regex.scala	100% <100%> (ø)	⬆️
regex/src/main/scala/CharacterClasses.scala	100% <100%> (ø)	⬆️

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