fix(is-overlap): modify policy same date overlap

[imwh0im]

#7

[codecov]

Codecov Report

Merging #8 (7e2b94b) into main (40686a3) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##              main        #8   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            1         1           
  Lines           32        29    -3     
  Branches        10         8    -2     
=========================================
- Hits            32        29    -3     

Impacted Files	Coverage Δ
src/index.ts	100.00% <100.00%> (ø)

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[imwh0im]

🎉 This PR is included in version 1.0.4 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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