id	summary	reporter	owner	description	type	status	priority	milestone	component	resolution	keywords	cc	repo	theme
402	Write archival/caching worker	pudo		"The caching worker will consumer update notifications and fetch packages. 

Extra points for: 

 * Properly checking for source file modification (Last-modified, Etag)  
 * Using PIP VCS Backends for retrieval
 * OFS/S3 Storage "	task	new