[DOC] Replaced newsletter with Google Groups

[goodalse2019]

[DOC]

Closes #1011.

Changes proposed in this pull request:

• Updated all mentions of tinyletter newsletter with google groups link

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.44%. Comparing base (f2a8325) to head (c8f0d44).
Report is 58 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1017   +/-   ##
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  Coverage   89.44%   89.44%           
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  Files          26       26           
  Lines        3420     3420           
  Branches      624      624           
=======================================
  Hits         3059     3059           
  Misses        210      210           
  Partials      151      151           

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[eurunuela]

Thank you @goodalse2019!

I think we may want to be consistent with capitalization of "Google Groups" throughout our docs. I have added the suggestions inline so it's easier for you to add them.

[goodalse2019]

Oh yes, agree! Updated - thanks!

[goodalse2019]

I am not sure why the ci/circleci checks are failing - they were not when I first submitted the PR. Is that an error on my end? Can it still be merged regardless? It continually is the "five-echo", "four-echo", "reclassify", and the "three-echo". I can close PR and reopen if that would help. Thanks!

[eurunuela]

It looks like the tests were cancelled, maybe with your new commits? In any case, they did pass for your last commit.

[eurunuela]

LGTM!

[handwerkerd]

LGTM

[handwerkerd]

@all-contributors please add @goodalse2019 for doc, ideas, question

[allcontributors]

@handwerkerd

I've put up a pull request to add @goodalse2019! 🎉

[handwerkerd]

I just ported our TinyLetter mailing list members to the new google group.
The way the group is currently set up, very few people will be allowed to post. I've made the following people managers so that they will be able to add/remove people and post: @eurunuela @goodalse2019 @n-reddy @tsalo @dowdlelt If you do or do not want this awesome power, please let me know.

As the list is currently set up, you can only post to the group from the web interface. I did this to make it impossible for any of us to accidentally reply to a message and send the reply to the entire group.