* Fix regex for getting frame data not working if agent is logged in to
pixiv
* Fix #unpack not returning the unpacked folder
* Fix frame_data being inaccessible because it was a local variable
* Fix images getting put in tmpdir, when they're expected to be in
tmpdir/images
* Fix deleting the tmpdir manually (it gets deleted automatically)
* Fix output webm being put in tmpdir (which gets deleted) instead of
write_path
