Explain every condition, and write the whole script in our own voice

The instructions only ever covered the weather. They are now four pages:
what you decide, how signs and spoilage work, what the sky does, and
what the street does - the fair and the rival included, with each
condition named and what it does to your day spelled out.

Every passage that was reproduced from the original has been rewritten:
the welcome, the ledger heading, the thunderstorm, the road works, the
heat wave, the bankruptcy line and the cost announcements. A project
released under copyleft has no business licensing words it did not
write, and now it does not have to. NOTICE.md records what changed and
why, and narrows the borrowed material to the town's name and the
ledger's labels - neither of which is a copyright question.

Shortening the ledger heading also fixes the pill that was wrapping to
two lines in the remaster.

Checked in both skins: all four pages fit the tube at full size, with
room to spare.

README.md

@@ -173,7 +173,7 @@ Affero rather than plain GPL because the leaderboard is a network service:
 anyone running a modified copy of it for other people has to offer them the
 source. Running the game on its own imposes nothing extra.
 
-The simulation, the artwork and the music are original work. The game's *rules*
-are not anyone's property, and some of the on-screen wording is quoted from the
-1979 original as homage rather than authored here. [NOTICE.md](NOTICE.md) sets
-out exactly what came from where, and credits the people who wrote it first.
+The simulation, the artwork, the music and every word on screen are original
+work — the game's *rules* are nobody's property, and nothing here is quoted
+from the original. [NOTICE.md](NOTICE.md) sets out exactly what came from
+where, and credits the people who wrote it first.