add section & add testing ckpt 1.1.4

[Borda]

What does this PR do?

add a new section after 1.1.4 release
add testing of legacy 1.1.4

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[Borda]

seems like NumPy docs is temp down...

intersphinx inventory 'https://numpy.org/doc/stable/objects.inv' not fetchable due to <class 'requests.exceptions.HTTPError'>: 404 Client Error: Not Found for url: https://numpy.org/doc/stable/objects.inv

[codecov]

Codecov Report

Merging #5495 (3b96095) into master (d916973) will decrease coverage by 0%.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master   #5495    +/-   ##
=======================================
- Coverage      93%     93%    -0%     
=======================================
  Files         135     135            
  Lines       10003    9863   -140     
=======================================
- Hits         9326    9173   -153     
- Misses        677     690    +13     

[Borda]

the remaining ckpt 1.1.4 was created by #5494