Add save/restore functions
Merge branch 'master' into save-workspace

Conflicts:
	wacspace.el
Add some tests for saving and restoring
Switch to 'C-c w' and 'C-c s' keybindings for tests
Update wacspace-restore to visit the buffer that it is called from
Add more scenarios
Wrap wacspace-restore in ignore-errors
More tests (all passing)
Update README to include saving and restoring
Add frame restoring based on prefix key