Bigger buffer for the Command Line interface.

[rhpvorderman]

Checklist

• Pull request details were added to CHANGELOG.rst

[codecov]

Codecov Report

Merging #39 (3cf571b) into develop (f688a15) will decrease coverage by 0.03%.
The diff coverage is 100.00%.

@@             Coverage Diff             @@
##           develop      #39      +/-   ##
===========================================
- Coverage    95.74%   95.71%   -0.04%     
===========================================
  Files            2        2              
  Lines          141      140       -1     
===========================================
- Hits           135      134       -1     
  Misses           6        6              

Impacted Files	Coverage Δ
src/isal/igzip.py	95.62% <100.00%> (-0.04%)	⬇️

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