fix:title-abbreviations problem

[fatteme]

Related issue

#50 Title Abbreviations

Description

Add another input in titleCase function named preserveUpperCase

Check List

• All test passed
• Added test to ensure correctness

[codecov-io]

Codecov Report

Merging #55 (5b35868) into master (d3183a8) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master      #55   +/-   ##
=======================================
  Coverage   98.84%   98.84%           
=======================================
  Files         108      108           
  Lines         955      956    +1     
  Branches      216      216           
=======================================
+ Hits          944      945    +1     
  Misses          9        9           
  Partials        2        2           

Impacted Files	Coverage Δ
src/case/title_case.js	100.00% <100.00%> (ø)

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[panzerdp]

There's one small thing to fix.

[damusix]

Bump. We need this fix.