Athlon1600 Youtube Downloader Versions Save

Refactored entire project to use type declarations everywhere. Because of that, the minimum supported PHP version is now PHP 7.4.

Complete list of changes: https://github.com/Athlon1600/youtube-downloader/compare/3.x...v4

High Impact Changes

• Removed VideoDetails class. We use VideoInfo class in its place
• DownloadOptions::getVideoInfo() will now return VideoInfo class
• AbstractModel class has been renamed to JsonObject
• PlayerResponseParser class has been renamed to SignatureLinkParser, and its parseLinks method has a different signature

Low Impact Changes

• removed SplitStream class
• removed DownloadOptions::getSplitFormats method
• SignatureDecoder::parseFunctionName and SignatureDecoder::parseFunctionCode are protected methods now

• Merged: https://github.com/Athlon1600/youtube-downloader/pull/173

• Improved security when passing URL to /public/stream.php. https://github.com/Athlon1600/youtube-downloader/issues/156

• Improved logic for fetching download links that are (usually) not throttled. https://github.com/Athlon1600/youtube-downloader/issues/142
• Miscellaneous refactoring to make this library more object oriented

• fetching get_video_info is now working again. Something had changed on YouTube's end to break it. https://github.com/Athlon1600/youtube-downloader/pull/120
• Added support for PHP 8 https://github.com/Athlon1600/youtube-downloader/pull/121
• Implemented a consentCookies method that allows bypassing cookies consent screen that gets shown to European IPs. https://github.com/Athlon1600/youtube-downloader/issues/125

• Fixed issue (https://github.com/Athlon1600/youtube-downloader/issues/110) where get_video_info endpoint was always returning 404

• Update to SignatureDecoder class. Match functions with double quotes in their name. Issue: https://github.com/Athlon1600/youtube-downloader/issues/99

Lots of code refactoring with many breaking changes, but everything now is much easier to read and understand.
Some of the major changes:

• Added a new php-curl-file-downloader dependency. Previous Browser class just duplicated a bunch of the same HTTP logic that I wrote for that library anyways.

• We're no longer passing arrays back and forth everywhere. That's just a bad programming practice in general. Most of those arrays are now objects. For example: getDownloadLinks method which used to return an array of links, now returns a DownloadOptions object where each "option" is also an object (StreamFormat).

• getDownloadLinks now throws a YouTubeException if something unexpected happens. Previously it just returned an empty array.
  We will be using Exceptions a lot more instead of just returning false or null as we were doing before.

• Youtube was renamed to YouTube (capitalized twice) everywhere, because that is just how YouTube itself does it: https://developers.google.com/youtube/v3/code_samples/php

• fixed a critical bug where video links were not returned due to improper parsing of player_response JS code that usually appears on /watch?v=XXX page itself.
• added an alternative way to parse such details for special cases. Solution provided by @julitroalves: https://github.com/Athlon1600/youtube-downloader/issues/73#issuecomment-686552940

• updated regex pattern for extracting function name used when decoding video signatures. Fixes: https://github.com/Athlon1600/youtube-downloader/issues/68