v1.0.6

1.0.6: Removed dependency on picolog

• Switched from picolog to ulog
• Wrap require in try..catch, fall back to console
• Log at INFO i.s.o. WARN (ulog default level is INFO in Node JS)
• In apps that use ulog, just-wait will use it as well and register itself as 'just-wait'
• In apps that don't use ulog, just-wait will use the console to log.