A couple of quick question, How will I know when I need to update my Keychain extension, do I get a message it needs updating?

With the advent of Microsoft once again removing and blocking an individual from GitHub, do you have alternate sites that the code is stored as a back-up? A couple of other large companies have been in the news also for getting extension band or blocked on some web browsers, is there an alternate site to obtain the extension from just in case?

Just concerned because I like the ease of use of it.