PageExpand por hakuhin

----- Main function -----
⚙️Popup image.
⚙️Batch download tool.
⚙️Extend anonymous BBS. (5ch, 2chan)

----- Sub function (Setting required) -----
⚙️Expand thumbnail image.
⚙️Expand MediaPlayer.
⚙️Expand shortened URL.
⚙️Replace text to hyperlink.
⚙️Override Referer and UserAgent. (abolish in MV3)
⚙️Customize by JavaScript. (abolish in MV3)

----- About PageExpand -----
⚙️Enrich legacy text-based sites.

----- Specification details -----
⚙️https://hakuhin.jp/browser_extension/page_expand.html

----- About the Android version -----
- Installation on mobile is deprecation.
- (very large data traffic.)
- (not convenient unless the screen is large.)
- (download API is no work.)