symlink to staging area before uploading

[daler]

currently, a separate rsync call is made for uploading every single file. For large hubs, a lot of time can be wasted on starting and stopping each connection.

A nicer approach would be to first symlink all files to a local temp dir used as a staging area, and then rsync the whole thing in one shot to the remote host (using the -L flag). This strategy has the additional benefits of 1) of identifying missing files before anything gets uploaded (currently, you have to pay close attention to the rsync output to see if something failed) and 2) seeing the full directory structure of the hub exactly as it will be uploaded.

[daler]

This is now implemented as of v0.2.4.