HEIC/HEIF support in similarity mode

[defteame]

First of all, thanks for the great software. I noticed that unfortunately, the similarity mode doesn't seem to support HEIC/HEIF images (i.e., iPhone photos etc.). It's not considering them (unlike JPEG/PNG, which work perfectly) when trying to find duplicates in this mode. Are there plans to add support for these formats, since it would be extremely helpful for phone users? Thanks!

[defteame]

It seems registering pillow_heif plugin and adding formats to IMAGES_EXTENSIONS would be enough to implement this, tested and created #20

[PJDude]

Thanks for contribution and nice words ! release v2.0345.574 (pillow-heif replaced with pi-heif)