Updated the CI to include codecov and docs in the original CI yml

[codecov[bot]]

Codecov Report

Merging #60 (4ccf622) into master (47744ad) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #60   +/-   ##
=======================================
  Coverage   90.51%   90.51%           
=======================================
  Files           4        4           
  Lines         137      137           
=======================================
  Hits          124      124           
  Misses         13       13           

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[dylan-asmar]

@zsunberg Does this workflow work better? Just want to make sure before I adjust others to be similar (https://github.com/JuliaPOMDP/POMDPs.jl/issues/363)

[zsunberg]

Yes, this looks great!