A small, self-contained Python example for accessing and modifying ERP5
data over its HATEOAS REST API using only `requests`:

- authenticate with login/password (the __ac cookie)
- list a module's catalog search parameters
- search Sale Orders by date range
- read a Sale Order with its order lines
- create a new Sale Order with lines

Includes DEVELOPING.md, a from-scratch guide for writing your own
Python integration against ERP5.