Feature: Filling gaps

[Roman223]

New feature allows filling NaNs with values sampled from bn.

New flag for managing filter's for neg vals behavior.

[codecov-commenter]

Codecov Report

Merging #78 (7c60262) into master (2bfca54) will increase coverage by 0.16%.
Report is 2 commits behind head on master.
The diff coverage is 57.41%.

@@            Coverage Diff             @@
##           master      #78      +/-   ##
==========================================
+ Coverage   66.93%   67.09%   +0.16%     
==========================================
  Files          39       41       +2     
  Lines        2658     2826     +168     
==========================================
+ Hits         1779     1896     +117     
- Misses        879      930      +51     

Files Changed	Coverage Δ
bamt/builders/evo_builder.py	97.33% <ø> (ø)
bamt/display/display.py	23.75% <23.75%> (ø)
bamt/networks/base.py	50.83% <37.50%> (+1.78%)	⬆️
bamt/display/__init__.py	60.00% <60.00%> (ø)
bamt/nodes/base.py	69.76% <66.66%> (-0.24%)	⬇️
bamt/nodes/mixture_gaussian_node.py	78.87% <70.00%> (+1.26%)	⬆️
bamt/nodes/conditional_mixture_gaussian_node.py	87.03% <72.72%> (+0.62%)	⬆️
bamt/nodes/gaussian_node.py	82.85% <85.71%> (+0.76%)	⬆️
bamt/nodes/logit_node.py	85.07% <85.71%> (-0.64%)	⬇️
bamt/nodes/discrete_node.py	95.23% <88.88%> (-4.77%)	⬇️
... and 5 more

... and 1 file with indirect coverage changes