The rules haven't changed. Punctuation is enclosed within quotations. The exception is when you enclose something parenthesis after a quotation.

But yes, some rules do change unofficially. Like spelling. The past tense of spell can be spelt or spelled. Some halfwit somewhere decided spelt is incorrect and for some reason a lot of people now think that spelling is invalid.

In both of the above cases someone somewhere took it upon themselves to change it. The reality is nothing has changed other than we have the internet now and everyone on the internet thinks they are an authority on everything.