fix: issue where `clear()` is still keeping references to the elements

[dnlmlr]

• Clear didn't delete the actual elements from the _list buffer. This caused something like a memory leak, described in #44
• Fixed this issue by simply overwriting the _list with a new array of the same size
• This keeps the capacity the same but allows the GC to free the memory

[codecov[bot]]

Codecov Report

Merging #47 (14c630b) into master (4b11d11) will not change coverage. The diff coverage is 100.00%.

:exclamation: Current head 14c630b differs from pull request most recent head 633e468. Consider uploading reports for the commit 633e468 to get more accurate results

@@            Coverage Diff            @@
##            master       #47   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            1         1           
  Lines          237       238    +1     
  Branches        49        49           
=========================================
+ Hits           237       238    +1     

Impacted Files	Coverage Δ
index.js	100.00% <100.00%> (ø)

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