Change Punctuation

Several Punctuation changes has been made for compatibility with Inform
build 6L02.

1) The text {excerpt} {location and line #} is followed by a semicolon
';', which only makes sense to me inside a rule or phrase (where
there's a heading, then a colon, then a list of instructions divided by
semicolons). Perhaps you want a full stop '.' instead?

2) Changed .”. to .” due to both being equivalent.

3) Changed ?”. to ?” due to both being equivalent.

4) Changed !”. to !” due to both being equivalent.