Will not upgrade until I'm allowed to begin downloads of
multiple versions of the same filename (as in version 1.4).

I typically start downloads of 2-3 of the same files, then cancel
all but the fastest. For example, one may be downloading at 2KB/sec,
while the other downloads at 45KB/sec. I of course cancel the
2KB file download.

The new version does not allow this, and this is a HUGE feature
that I rely upon for nearly 100% of my downloading activities to
ensure successful downloads before the other hosts drop offline.

Please put this ESSENTIAL feature back into your product.