Merge branch 'snap'
Fix a horrifying bug that ruined selectors

Store the starting target element and then restore it correctly later
Undo debugging changes
Add event argument to interact.stop
`delete` unset Selectors from selectors object
Add globalEvents to interact.debug() return object
Improve Interactable#validateSetting method
Fix Interactable#autoScroll
Format nicely
Make globalEvents an Object
Fix bug in Interactable#unset with selectors
Improve options inheritance