Verbatim-safe typography, ^-punctuation quoting, full-range ^UUUU^, polyglot html

Typographic transforms (---, quote pairs, ~) no longer touch verbatim
text: @c/@code/@source_listing content and ^'...'^ spans show exactly the
characters written. "^" before any punctuation character quotes it in
every target (the apostrophe excepted: ^' opens a literal span), with the
new :resolve option on @@@target declaring per-target renderings. The
^UUUU^ code-point form accepts 4-6 hex digits, the full Unicode range.
The html output and transform spellings are polyglot (XML-valid), in
preparation for an EPUB target. New suites: transform_test, character_test
(engine), typography_test (SKS).

(from dev 07ce5ea86a0a)

sks/color/color.py

@@ -25,13 +25,3 @@ class Color(klammer_base.Klammer_base):
         if self.text:
             result = '{{{} {}}}'.format(result, self.text)
         return result
-
-def hex_color(name, hex):
-    def c(h):
-        return float(eval('0x' + h)) / 255.0
-    r = c(hex[:2])
-    g = c(hex[2:4])
-    b = c(hex[4:])
-    return '\\definecolor{{{}}}{{rgb}}{{{:.3f},{:.3f},{:.3f}}}'.format(
-        name, r, g, b)
-