Union{Missing, T} instead of typemax for missing for gpu

[khosravipasha]

No description provided.

[codecov]

Codecov Report

Merging #105 (79136a4) into master (bdd0709) will increase coverage by 0.72%.
The diff coverage is 50.00%.

@@            Coverage Diff             @@
##           master     #105      +/-   ##
==========================================
+ Coverage   85.90%   86.62%   +0.72%     
==========================================
  Files          27       27              
  Lines        2915     3066     +151     
==========================================
+ Hits         2504     2656     +152     
+ Misses        411      410       -1     

Impacted Files	Coverage Δ
src/Utils/data.jl	84.09% <50.00%> (+2.77%)	⬆️
src/io/jlc_io.jl	92.92% <0.00%> (-1.29%)	⬇️
src/io/sdd_io.jl	97.59% <0.00%> (+0.02%)	⬆️
src/abstract_logic_nodes.jl	96.62% <0.00%> (+2.56%)	⬆️
src/Utils/misc.jl	89.15% <0.00%> (+3.19%)	⬆️
src/io/io.jl	92.30% <0.00%> (+7.69%)	⬆️

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