* Add case-insensitivity as an option.
-* Add option to download all files needed to display a web page
- (images, etc.)
-
* Handle MIME types correctly. There should be an option to (not)
retrieve files based on MIME types, e.g. `--accept-types=image/*'.
* Implement more HTTP/1.1 bells and whistles (ETag, Content-MD5 etc.)
* Support SSL encryption through SSLeay or OpenSSL.
-
-* When -K is used with -N, check local file X.orig (if extant) against server
- file X.