Final changes required by JSS & fix package alias

[pschil]

Summary

• CITATION file
• DOI references
• Readme: Badge & Link
• update cran comments with comments recommended by JSS
• Fix package alias no longer automatically generated by JSS

[codecov[bot]]

Codecov Report

Merging #79 (b9628fb) into development (17ebe77) will not change coverage. The diff coverage is n/a.

:exclamation: Current head b9628fb differs from pull request most recent head 400d989. Consider uploading reports for the commit 400d989 to get more accurate results

@@             Coverage Diff              @@
##           development      #79   +/-   ##
============================================
  Coverage        97.22%   97.22%           
============================================
  Files               37       37           
  Lines             1655     1655           
============================================
  Hits              1609     1609           
  Misses              46       46           

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