Often people want to work on the same Construct project as a team. Construct supports saving projects in a folder structure, where each part of the project is s...
Updates are not mandatory - you can choose whichever release you want to use on the releases page. If you work in a team, your whole team need to upgrade at the same time. That's a part of project management that your team will need to handle - software can't handle that for you.
If you install the stable version, then the installed version will always update to the latest stable release, and if you install a beta version, then the installed version will always update to the latest beta release. That should always work consistently, and if it doesn't, please file an issue.
If anyone wants to work consistently and freely using Github, currently the PWA is not the way to go. Shortcutting an editor version works exactly as it was before you enforced updates, and has never given me any issues since. I just click c3 on my taskbar, and the correct version is displayed for everyone.
If anyone wants extra steps and the risk of losing progress, that's cool. Tried reasoning on the forums a long time ago, to everyone's frustration on the dev's responses. I still respect his stance, and his work is absolutely incredible (has been my main professional engine for too long to remember).