Made file uploading more robust by skipping the first line of headers instead of requiring it to be removed manually (which was a stupid and lazy thing to require in the first place, but I was writing fast and furious...)
Preemptive shipping status checker implemented in a very basic and manual way; a fair amount of work left to do on this feature; again, I'm aware that I should be working in separate branches for each feature, but I just can't force myself into that workflow just yet for some unknown reason.