We now have site staging available. We made this feature mainly with WordPress sites in mind, but it can be used for any site type.
Check out the instructions on our docs site.
This is just an initial iteration of site staging and we’d love to hear what you think would make it better!
One thing we have on our list already is to make exclusion files and script sticky so you don’t have to re-enter them.
NIce one, how about a function to create a staging copy from a production site?
This function is only for merging my modifications to the production site, right?
Good idea!
We are thinking of ability to clone a db for staging purposes as well.
This function is only for merging my modifications to the production site, right?
Correct, right now it simply replaces the production files with the staging files on sync. Just wanted to start simple and then build on top of it. 
A quick function to clone a website (with or without database) would be great.
After I click on sync. How long does it complete the work? Is there a status bar?