Upload assets only when changed

[jgarber]

Wouldn't it be great if you didn't have to upload all your assets to S3 every time you deploy, even when nothing changed? I'm thinking you could copy and prepare all the assets as usual, but then MD5 hash what you're about to upload and see if it's the same as what was previously uploaded. The hash could even replace the REV number, I imagine.

[adamburmister]

Yes, excellent thought. I'll try to implement this when I get some time.