Work in progress.
Work in progress.
Work in progress.
Work in progress.
Work in progress.
Work in progress.
Work in progress.
Work in progress.
Work in progress.
Work in progress.
Work in progress.
Work in progress.
Work in progress.
Work in progress.
Work in progress.
Work in progress.
First working version.
Less verbose
Locking
Use tmp file for writing feed.