Updates for Inform 7 (build 6L02)

The following updates are for punctuation changes, and spacing changes.  Also included is the new file Plurality by Emily Short.

According to the documentation from Inform;
2.3. Punctuation
"In English grammar, it's usual to regard a full stop as closing its sentence even when it occurs inside quotation marks, provided there is no indication to the contrary, and this is also the rule used by Inform."

On lines with no indentation, it was found that all lines should end in a full stop [.]. According to the documentation any sentence that ended with a full stop, question mark, or exclamation point inside a set of double quotes was not necessary to have a full stop outside the double quotes. However, if the line continues with more commands after the double quotes then a full stop was necessary.

To keep thing consistent I change all line and sentence endings to a full stop on non-indented lines.

i.e.
The description is "Shiny." It is valuable. [This was returning errors as it is valuable was something Inform could not understand.]

The description is "Shiny.". It is valuable. [No errors are returned here.]

--
the fuckscene of rubber tigress is "You are unable to initiate pet sex with Artemis - yet."
templust is a number that varies. […but this seems to give something a name which contains double-quoted text, which is not allowed.]

the fuckscene of rubber tigress is "You are unable to initiate pet sex with Artemis - yet.".
templust is a number that varies. [No errors are returned here.]