GitHub -> Github (#63)
Only perform automatic snapshots on interactive sessions
Don't generate .Rd doc for appDependencies
Don't mention appDepencies docs; just inline explain
Add getLibPaths, setLibPaths wrappers over .libPaths; clean up inst dir
Call .libPaths rather than setLibPaths in snapshot hook async process
Restore when unbundling a project
Relax checks in checkPackified

- If we have a lock file, then it's a packrat project.
Restore before entering packrat mode
Tweak test package script a tiny bit
Document 'restore' arg + tweaks