RSS Reader

iOS developer test task Task description Create an app that fetches and displays RSS feeds.

Requirements
- Project must compile in any Xcode build of the latest major version without any additional setup or configuration.
- App must support at least iOS 8 devices.
- Feel free to use third-party components for low-level tasks.

UI Description
- User can add/remove/modify RSS feed sources.
- News entities are displayed in a sectioned list (each section is a feed source with its title).
- Show image, title, short description for each news article (in list).
- Full news article should be rendered in a separate screen, opened by tap on a list item.

Optional features
- Implement favorite feeds. There should be two lists: all feeds and favorite feeds.
- Implement persistence of URLs to the feed sources in the local data storage.
- Implement feeds search/filtering.
- Implement navigation through news articles using swipe gesture in the article view screen.
- Anything you like, but don't make it too complicated.

Expected behaviour
- Application should be ready to handle network errors at any moment.
- Application should be ready for "invalid" data (from user and from server).
- Application should never freeze or crash.

Evaluation criteria The app should be developed using the best practices applicable to commercial development and team work. Key crtiteia are:
- Code architecture.
- Code maintainability.
- Code reliability.
- Code reusability.
- Code style.
- Project structure and configuration.

Quality prevails over the app functionality.