Update to Unicode 15 and bump version to 0.1.22

crlf0710 · crlf0710 · commit 0dc53bb8668c · 2022-09-16T23:18:55.000+08:00
diff --git a/README.md b/README.md
@@ -31,7 +31,7 @@ to your `Cargo.toml`:
 
 ```toml
 [dependencies]
-unicode-normalization = "0.1.20"
+unicode-normalization = "0.1.22"
 ```
 
 ## `no_std` + `alloc` support
diff --git a/scripts/unicode.py b/scripts/unicode.py
@@ -21,7 +21,7 @@
 import collections
 import urllib.request
 
-UNICODE_VERSION = "14.0.0"
+UNICODE_VERSION = "15.0.0"
 UCD_URL = "https://www.unicode.org/Public/%s/ucd/" % UNICODE_VERSION
 
 PREAMBLE = """// Copyright 2012-2018 The Rust Project Developers. See the COPYRIGHT
diff --git a/src/tables.rs b/src/tables.rs
