Kainoto Simple RSS Importer

This plugin provides a straightforward interface for WordPress administrators to import posts from an RSS 2.0 or Atom feed — by pasting a feed URL or uploading a feed file. It is designed to solve common import problems, such as content corruption from aggressive sanitization, by performing minimal processing.

Key Features:
* Import posts from a feed URL (e.g. Blogger/Blogspot) or an uploaded RSS/XML file.
* Supports both RSS 2.0 and Atom feeds.
* AJAX-based import with a live progress bar and per-post log — avoids server timeouts on large feeds.
* Reliable duplicate detection: posts are matched by the feed item’s unique ID (stored in post meta), with a title fallback.
* Handles untitled posts (common on Blogger) by generating a title from the content.
* Correctly imports post publication dates.
* Option to import feed categories/labels as either WordPress Categories or Tags.
* Option to import as Published or Draft.
* Option to tag all imported/updated posts with custom tags, so they are easy to find after the import.
* Option to overwrite existing posts.
* Advanced content cleaning:
* Remove all style and class attributes from HTML.
* Remove specific tags (like span, font) while keeping the text inside them.
* Fixes unwanted line breaks and extra spaces.
* Securely built with WordPress coding standards, including nonce verification and capability checks.