What we've been reading
Ports and Adapters with Command Handler pattern in Python
Series of articles on application architecture in Python, starting with this on the use of the Ports and Adapters (Hexagonal) style.
Practical continuous deployment: a guide to automated software delivery
Nice little nuts and bolts article on automating software deployments at Atlassian.
Feature branching your way to greatness
Another article on techniques for feature branching and why it's important.