0.7.28 Add a Beta branch and text editing feature — Multi Turret Academy Steam update #562267

A couple of days ago, I mentioned the idea of updating the Chinese and English versions first to speed up development. Every player I talked to seemed quite supportive, so I've decided to give it a try. I've added a Beta branch. From now on, updates will first be made to the Beta branch, adding only Chinese and English content. Once the translation for other languages is complete, updates will then be pushed to the main branch. Please participate in testing by right-clicking on the game in Steam, selecting "Properties" - "Betas" - "Beta Participation"! -I've placed a text file in the game's root directory, accessible to every beta user. Feel free to contribute to translation and proofreading. "Multi Turret Academy_Data/StreamingAssets/Localization" -I've also placed character illustrations in the game's root directo...