Updates in debugging toolkit

[lee30sonia]

• Update percy
• Add optional dependency nauty
• generators/random_logic_generator -> generators/random_network
• Random network generation based on topologies
• Improvements in testcase_minimizer
• Update examples

[codecov-commenter]

Codecov Report

Merging #557 (6b55d0a) into master (bc24b33) will decrease coverage by 0.04%. The diff coverage is 95.08%.

@@            Coverage Diff             @@
##           master     #557      +/-   ##
==========================================
- Coverage   82.83%   82.78%   -0.05%     
==========================================
  Files         148      148              
  Lines       18569    18529      -40     
==========================================
- Hits        15381    15339      -42     
- Misses       3188     3190       +2     

Impacted Files	Coverage Δ
include/mockturtle/algorithms/balancing.hpp	75.00% <ø> (ø)
include/mockturtle/generators/random_network.hpp	95.08% <95.08%> (ø)

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