[Bug] watch command resurrects without '-characters.

First of all, thank you for making this really awesome tool that I've been waiting for a long time now! Also, I'm pretty new on Git(Hub) and as such I'm not sure how to report new issues (or feature requests for that matter). If you have a comment then please let me know how I could do things better next time :)

On to the situation:

After I've saved the session (only 1) and I tried to resurrect it, I found that in one of the panes the command watch -n1 -d 'free -m; df -h' was turned into watch -n1 -d free -m; df -h upon resurrection.

Also I've found that the htop pane had more space than previously, but I suppose that's material for another bug report?

Here's the ~/.tmux/resurrect/last and my .tmux.conf