chore: Release 0.2.19

[robinlinden]

This change is 

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 73.09%. Comparing base (f904179) to head (da43876).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2691      +/-   ##
==========================================
+ Coverage   73.07%   73.09%   +0.02%     
==========================================
  Files         149      149              
  Lines       30533    30533              
==========================================
+ Hits        22312    22319       +7     
+ Misses       8221     8214       -7     

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[JFreegman]

Reviewed 6 of 6 files at r1, all commit messages.
Reviewable status: complete! 3 of 1 approvals obtained

[nurupo]

Needs to be rebased on master, which will also fix some of the CI checks.

---

goblint says that this assertion always fails:

[Error][Assert] Assertion "(int )ret" will fail. (toxcore/group.c:3699:17-3699:38)

c-toxcore/toxcore/group.c

Lines 3696 to 3700 in 0ec4978

	// HACK: suppress unused variable warning
	if (!ret) {
	// wipe_group_chat(...) must be able to wipe partially allocated groups
	assert(ret);
	}

Typically one does (void)(foo); to get rid of the unused variable warning, so not sure what is the code above is trying to do.

---

@iphydf didn't you want to mention in tox_events.h and tox_dispatch.h that those APIs are experimental / not yet stable? ("Experimental" is probably a bad choice of words given those headers get installed even with -DEXPERIMENTAL_API=OFF.)

[nurupo]

@iphydf didn't you want to mention in tox_events.h and tox_dispatch.h that those APIs are experimental / not yet stable? ("Experimental" is probably a bad choice of words given those headers get installed even with -DEXPERIMENTAL_API=OFF.)

I see @iphydf addressed those in #2743.

The goblint warning doesn't bother me too much so LGTM.