Support for MOI 0.9.5

[mtanneau]

• Add support for MOI.NumberOfThreads
• Check result index

[mtanneau]

Closes #30

[codecov-io]

Codecov Report

Merging #31 into master will increase coverage by 0.43%.
The diff coverage is 92%.

@@            Coverage Diff             @@
##           master      #31      +/-   ##
==========================================
+ Coverage   83.62%   84.06%   +0.43%     
==========================================
  Files          20       20              
  Lines        1466     1487      +21     
==========================================
+ Hits         1226     1250      +24     
+ Misses        240      237       -3

Impacted Files	Coverage Δ
src/Model/Model.jl	95.23% <100%> (+0.5%)	⬆️
src/env.jl	100% <100%> (ø)	⬆️
src/MOI_wrapper.jl	88.55% <90.9%> (+0.74%)	⬆️
src/LinearAlgebra/LinearAlgebra.jl	57.14% <0%> (+7.14%)	⬆️

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