libemu: Fix /.emu exclude from rsync
emu/verify: Fix imports
libemu: Fix up exception handling
libemu: Better sanity checks on Source()
libemu: Add sanity checks to Snapshot()
libemu: Add sanity checks to Stack()
libemu: Refactor Source.create()
libemu: Add Util.(read|write)() methods
libemu: Add dry_run property to destory()
libemu: Refactor Stack() class
libemu: Use an INI format for nodes
libemu: Minor refactors
libemu: Refactor Snapshot() constructor prototype
libemu: Colourise log() output
libemu: Use SnapshotID in Snapshot()
libemu: Snapshot class refactors