The current code in git works well enough.
After some testing, I'd like to make the first public release of
PCManFM Qt port.
It will not contain thubmanil support because this requires some API
changes of upstream libfm library. In April, there should be a new
release of libfm. So it's the right time for pcmanfm-qt to have
another new release with thumbnail support.
If there are no objections, I'll make the new release soon.