Indicate that the fetch has already happened 
Turn on nice settings for class
More straight-forward start_requests impl
Type annotate the response param
Use inheritance to reduce code duplication

This removes the non-important code from the user's field of view
Install service_identity to make Scrapy happy
Give each spider a unique name

So they show up in `scrapy list` and can be invoked with `scrapy crawl` et al.
Split long xpath for more legibility
Fix regex todo item in L2
Ignore .scrapy and any log files