* upstream/master: (110 commits)
[Fix] Fix detection of URLs in text parts
[Fix] Strip '\r\n' properly
[Fix] More fixes about shared memory in proxy
[Fix] One more try to fix redis
[Feature] Use one pass to remove newlines and store their positions
[Fix] Fix descriptors leak on shmem detaching
[Fix] More and more fixes to redis states
[Fix] Another try to fix redis states
[Fix] Set terminated state before calling of async free
[Fix] Fix state on timeout
[Fix] Another try to fix redis mess
[Fix] Fix redis timeout events handling
[Minor] Add some more tests
[Feature] Try to read on fuzzy timeout to avoid fake timeouts
[Feature] Add ESMTPSA received type
[Fix] Fix stack growing
[Feature] Further relax parser
[Fix] Fix parsing of nested braces in SMTP comments
[Minor] Add `application/octet-stream` mime type for `pdf` extension
[Fix] Fix parser
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