Support for read and write of circuits to *.gz compressed files

[guyvdbroeck]

No description provided.

[codecov]

Codecov Report

Merging #104 (98290d8) into master (97ad299) will increase coverage by 0.12%.
The diff coverage is 88.88%.

@@            Coverage Diff             @@
##           master     #104      +/-   ##
==========================================
+ Coverage   85.20%   85.33%   +0.12%     
==========================================
  Files          25       25              
  Lines        2718     2742      +24     
==========================================
+ Hits         2316     2340      +24     
  Misses        402      402              

Impacted Files	Coverage Δ
src/Utils/misc.jl	82.97% <ø> (ø)
src/io/io.jl	91.66% <88.88%> (+7.05%)	⬆️
src/io/sdd_io.jl	97.59% <0.00%> (+0.02%)	⬆️
src/io/jlc_io.jl	94.28% <0.00%> (+0.08%)	⬆️

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