Remove use of spinlock

[maleadt]

No description provided.

[codecov]

Codecov Report

Merging #22 into master will increase coverage by 0.04%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master      #22      +/-   ##
==========================================
+ Coverage   88.69%   88.74%   +0.04%     
==========================================
  Files          26       26              
  Lines        1442     1448       +6     
==========================================
+ Hits         1279     1285       +6     
  Misses        163      163              

Impacted Files	Coverage Δ
src/memory/dummy.jl	91.30% <ø> (ø)
src/memory/simple.jl	92.64% <ø> (ø)
src/memory/split.jl	93.51% <ø> (ø)
src/memory.jl	78.42% <100.00%> (+0.46%)	⬆️
src/memory/binned.jl	92.65% <100.00%> (+0.08%)	⬆️

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