2.55.0

• Added support for oiClass, Le Quy Don Online Judge, VNOI Online Judge, and NBUT Online Judge
• Added support for the Challenge mode on Kattis
• Fixed the Timus Online Judge parser to work with the acm-judge.urfu.ru domain
• Fixed the Toph parser (thanks @touhidurrr)
• Fixed the AlgoZenith parser
• Fixed the Virtual Judge contest parser

2.54.0

• Added support for QQWhale
• Added support for the "Complete problemset" pages in Codeforces contests
• Improved performance of sending contest problems to external tools by sending them in parallel (thanks @rsalesc)
• Fixed the parsing of ACMP sample cases with mid-line whitespaces (thanks @touhidurrr)
• Fixed the Toph parser
• Fixed the input/output parsing on certain Codeforces problems

2.53.0

• Added support for Kilonova, PBInfo, InfoArena, and NerdArena (thanks @overanalytcl)
• Added support for parsing sample cases on UVA and UVALive problems on Virtual Judge (does not work on Firefox until Firefox bug #1757836 is resolved)
• Fixed the parsing of Virtual Judge sample cases on Chinese problems
• Fixed the parsing of Virtual Judge titles containing unwanted whitespace

2.52.1

• Fixed the parsing of TLX problems (thanks @adrieljss)
• Fixed the parsing of CodeChef problems

2.52.0

• Added support for Lanqiao (thanks @touhidurrr for the problem parser)
• Added support for Eolymp Basecamp (thanks @touhidurrr for the problem parser)
• Added support for the vjudge.net.cn Virtual Judge mirror (thanks @touhidurrr)
• Fixed the parsing of PTA problems (thanks @touhidurrr)
• Fixed the parsing of TLX problems (thanks @touhidurrr)

2.51.1

• Fixed the parsing of AlgoZenith problems on its maang.in website (thanks @rohitzerofour)
• Fixed the parsing of Baekjoon Online Judge problems in active contests
• Fixed the parsing of certain Mendo problems

2.51.0

• Removed the Baekjoon Online Judge contest parser because Baekjoon Online Judge has started to block requests to their problems made through the browser's Fetch API
• Fixed the parsing of USACO problems

2.50.2

• Fixed custom rules that target the UOJProblemParser or VirtualJudgeProblemParser

2.50.1

• Fixed the parsing of AlgoZenith problems on its maang.in website (thanks @GandharvJain)
• Fixed the parsing of beecrowd problems and contests
• Fixed the parsing of USACO Training problems

2.50.0

• Added support for Mendo (thanks @EntityPlantt)
• Fixed the parsing of sample cases on Firefox for online judges using DOMjudge
• Fixed the parsing of CodeChef problems

Please note: the Chrome Web Store release for 2.49.0 was rejected, presumably because the extension sends parsed problem data to local applications over HTTP rather than HTTPS. I've contacted the Chrome Web Store team through their contact form, and until this issue is resolved updates won't be published to the Chrome Web Store. Firefox releases are still going through fine, and you can manually install this version of the extension on Chrome by downloading its distribution below, extracting it, and installing it on chrome://extensions/ > Developer mode: On > Load unpacked.

Update: the Chrome Web Store team has reviewed the extension again and deemed it compliant with its privacy policy. Upon their request I've re-submitted the rejected submission (2.49.0), as they cannot approve a previously rejected submission. Once 2.49.0 is successfully published, I'll submit 2.50.0 to the Chrome Web Store as well.

Update: 2.49.0 has successfully been published to the Chrome Web Store. I've submitted 2.50.0 to the Chrome Web Store as well and expect it to be available soon.

Final update: 2.50.0 is now available in the Chrome Web Store.