Also, standardize indentation of generated tables.

Straightforward. While we're at it, though, strip trailing whitespace from generated tables.

* Replaced list(<generator expression>) with list comprehension
* Replaced dict(<generator expression>) with dict comprehension
* Replaced set(<list literal>) with set literal
* Replaced builtin func(<list comprehension>) with func(<generator
  expression>) when supported (e.g. any(), all(), tuple(), min(), &
  max())

Not completely mechanical since support for East Asian Width changes—emoji
codepoints became Wide—had to be added to unicodedata.