seb-b
commented
5 years ago @mrname sorry about the delay, I've been holding off before getting the package up to date with the latest wagtail versions.
Could you rebase this please, looks like there's a conflict now, after that it should be good to merge
Fixes #31 by retaining thumbnails when a video is updated if it was not originally auto-generated. All other behavior remains intact, except that the file input is now clearable. This would allow users to nullify a custom thumbnail, hence allowing for auto-generation again.