add flag for computing p(x|y) in conditional HINT

[mloubout]

Re-oppening once again

[codecov]

Codecov Report

Merging #44 (d9e4ea0) into master (7070ec8) will increase coverage by 0.02%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master      #44      +/-   ##
==========================================
+ Coverage   85.94%   85.96%   +0.02%     
==========================================
  Files          31       31              
  Lines        2511     2515       +4     
==========================================
+ Hits         2158     2162       +4     
  Misses        353      353              

Impacted Files	Coverage Δ
src/conditional_layers/conditional_layer_hint.jl	94.85% <100.00%> (ø)
src/layers/invertible_layer_actnorm.jl	87.50% <100.00%> (ø)
src/layers/invertible_layer_basic.jl	92.20% <100.00%> (ø)
src/layers/invertible_layer_hint.jl	92.82% <100.00%> (ø)
...rc/networks/invertible_network_conditional_hint.jl	89.38% <100.00%> (ø)
src/utils/parameter.jl	64.38% <100.00%> (+2.06%)	⬆️

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[mloubout]

Is this ready to go?

[mloubout]

what's the status here?