Exclude aliases from white and black lists

[devth]

Ref https://github.com/yetibot/yetibot.core/issues/136

[codecov[bot]]

Codecov Report

Merging #138 into master will decrease coverage by 0.10%. The diff coverage is 15.38%.

@@            Coverage Diff             @@
##           master     #138      +/-   ##
==========================================
- Coverage   42.72%   42.62%   -0.11%     
==========================================
  Files          92       92              
  Lines        3979     3991      +12     
  Branches      180      181       +1     
==========================================
+ Hits         1700     1701       +1     
- Misses       2099     2109      +10     
- Partials      180      181       +1     

Impacted Files	Coverage Δ
src/yetibot/core/commands/help.clj	22.22% <8.33%> (-5.78%)	:arrow_down:
src/yetibot/core/util/command.clj	70.83% <100.00%> (-1.51%)	:arrow_down:

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[devth]

Adding aliases to help docs in their own section:

[gkspranger]

tremendous !!