It appears that the order of the parameters have an effect. That is, if I specify --filetype switch before the -d, it works.
GUI Sequence Export needs longer digits
CLI output always in PNG
Integrate methods not public
It's not public it's because it is still very buggy. I will make it public once it's ready.
Reversed TLD change. Will reintroduce when it hits to v1.0.
Bugfix on density (per 3.4.0, synced to 3.4.1-alpha-r72648)
Port the bugfix #17178