Cover Scrapy 1.8.0 in the release notes

[Gallaecio]

Last covered commit: 7731814
Also covers #4092

[codecov]

Codecov Report

Merging #3952 into master will increase coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #3952      +/-   ##
==========================================
+ Coverage   85.67%   85.68%   +0.01%     
==========================================
  Files         165      165              
  Lines        9734     9734              
  Branches     1463     1463              
==========================================
+ Hits         8340     8341       +1     
  Misses       1136     1136              
+ Partials      258      257       -1

Impacted Files	Coverage Δ
scrapy/logformatter.py	90.47% <ø> (ø)	⬆️
scrapy/utils/trackref.py	86.48% <0%> (+2.7%)	⬆️

[codecov]

Codecov Report

Merging #3952 into master will decrease coverage by 0.19%.
The diff coverage is n/a.

@@            Coverage Diff            @@
##           master    #3952     +/-   ##
=========================================
- Coverage   85.35%   85.16%   -0.2%     
=========================================
  Files         167      167             
  Lines        9699     9734     +35     
  Branches     1453     1457      +4     
=========================================
+ Hits         8279     8290     +11     
- Misses       1162     1182     +20     
- Partials      258      262      +4

Impacted Files	Coverage Δ
scrapy/core/downloader/contextfactory.py	75% <0%> (-21.16%)	⬇️
scrapy/core/downloader/tls.py	75.92% <0%> (-10.13%)	⬇️
scrapy/core/downloader/handlers/http11.py	89.92% <0%> (-2.99%)	⬇️