add changelog for 1.4.0

[thehowl]

mostly generated straight out of the tool, but removed all refactoring and testing PRs. also added link to the blog on top.

[strk]

ouch it's huge, I liked the blog post version much more, too much information becomes noise (which tool, btw?)

[lafriks]

Docs should probably be removed

[thehowl]

@strk https://github.com/lunny/changelog

As for the fact that it's huge - I agree. I'm now trying to further cut some some more entries. I quite agree with you in saying that the other changelogs should be more descriptive and shorter, but I also see the point in keeping it "technical" and without hiding too much of what has been changed (for instance, one might not find that we've fixed that very specific bug in the blog post, but they can do so in the CHANGELOG file).

@lafriks I agree, they're not that important. Done.

[codecov-io]

Codecov Report

Merging #3435 into master will decrease coverage by 0.02%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #3435      +/-   ##
==========================================
- Coverage   35.62%   35.59%   -0.03%     
==========================================
  Files         281      281              
  Lines       40586    40586              
==========================================
- Hits        14458    14446      -12     
- Misses      23993    24001       +8     
- Partials     2135     2139       +4

Impacted Files	Coverage Δ
modules/indexer/indexer.go	70% <0%> (-7.5%)	⬇️
models/repo_indexer.go	44.24% <0%> (-4.43%)	⬇️
models/repo_list.go	65.62% <0%> (-1.57%)	⬇️
models/repo.go	43.17% <0%> (+0.18%)	⬆️

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[appleboy]

Add new line here?

[lafriks]

previously we did not do that

[sapk]

I think it should be in features as it permit to use the command git lfs lock.

[lafriks]

Waiting for Swedish translation to be approved