Ultralist 0.9.3

• Small bugfix where help text showed todolist init rather than ultralist init
• Show correct version everywhere (thanks @timorunge !)
• Updates and organization to usage screen
• add check_auth command for syncing with Ultralist Pro
• Bugfix when using ultralist web to route to correct todolist
• Change how background sync works so it is compatible with all platforms
• fix the windows build (yay!)