Update compression.jl

[JonasIsensee]

fixes #318

[codecov]

Codecov Report

Merging #319 (7c92ae8) into master (aadeda3) will not change coverage.
The diff coverage is 100.00%.

❗ Current head 7c92ae8 differs from pull request most recent head 40587c4. Consider uploading reports for the commit 40587c4 to get more accurate results

@@           Coverage Diff           @@
##           master     #319   +/-   ##
=======================================
  Coverage   90.28%   90.28%           
=======================================
  Files          27       27           
  Lines        2727     2727           
=======================================
  Hits         2462     2462           
  Misses        265      265           

Impacted Files	Coverage Δ
src/compression.jl	96.82% <100.00%> (ø)

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