refactor ModuleManager.init
test for reference?
refactor
add readme
Merge branch 'dev' of github.com:eight04/ComicCrawler into dev
Use message queue to communicate between threads
complete worker class
Worker: add callable target
Use sender
better error design?
seperate message object
change transmessage behavior
add messageerror
child thread error
fix onMessage bug
seperate worker class and testing
add test
fix typo bug
remove cache and fix bugs
fix bug