Prepare for CRAN

[dieghernan]

Linked to #53 and #54

[codecov]

Codecov Report

Base: 99.12% // Head: 99.12% // No change to project coverage 👍

Coverage data is based on head (92b26e5) compared to base (42d11b4).
Patch has no changes to coverable lines.

❗ Current head 92b26e5 differs from pull request most recent head 95f6558. Consider uploading reports for the commit 95f6558 to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #55   +/-   ##
=======================================
  Coverage   99.12%   99.12%           
=======================================
  Files          27       27           
  Lines        1365     1365           
=======================================
  Hits         1353     1353           
  Misses         12       12           

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