bpo-30736: upgrade to Unicode 10.0 (#2344)

Straightforward. While we're at it, though, strip trailing whitespace from generated tables.
diff --git a/Doc/reference/lexical_analysis.rst b/Doc/reference/lexical_analysis.rst
index 7f9c664..1a7c6f9 100644
--- a/Doc/reference/lexical_analysis.rst
+++ b/Doc/reference/lexical_analysis.rst
@@ -313,7 +313,7 @@
 * *Nd* - decimal numbers
 * *Pc* - connector punctuations
 * *Other_ID_Start* - explicit list of characters in `PropList.txt
-  <http://www.unicode.org/Public/8.0.0/ucd/PropList.txt>`_ to support backwards
+  <http://www.unicode.org/Public/10.0.0/ucd/PropList.txt>`_ to support backwards
   compatibility
 * *Other_ID_Continue* - likewise
 
@@ -875,4 +875,4 @@
 
 .. rubric:: Footnotes
 
-.. [#] http://www.unicode.org/Public/8.0.0/ucd/NameAliases.txt
+.. [#] http://www.unicode.org/Public/10.0.0/ucd/NameAliases.txt