Added a feature - checkbox to overwrite files in place
So it turns out PathSync + JungleDisk + Amazon S3 is a really nice offsite backup combination. Only one problem: S3 can't rename files. And when PathSync writes out a file, it first writes it to a temp file name then deletes the old, and renames the temp file. This is a good practice for data safety, but unfortunately with S3, what happens is you upload the file twice.
So, I added a checkbox to overwrite files directly, which means only one upload. It might be useful in other situations too I guess. Anyway, I attached a zip. Based on latest 0.34.