Update current version number

Author: nikic

README.md

@@ -59,12 +59,12 @@ Basic usage
 
 Code can be parsed using either `ast\parse_code()`, which accepts a code string, or
 `ast\parse_file()`, which accepts a file path. Additionally, both functions require a `$version`
-argument to ensure forward-compatibility. The current version is 90.
+argument to ensure forward-compatibility. The current version is 100.
 
 ```php
-$ast = ast\parse_code('<?php ...', $version=70);
+$ast = ast\parse_code('<?php ...', $version=100);
 // or
-$ast = ast\parse_file('file.php', $version=70);
+$ast = ast\parse_file('file.php', $version=100);
 ```
 
 The abstract syntax tree returned by these functions consists of `ast\Node` objects.

RELEASE_CHECKLIST

@@ -1,6 +1,7 @@
 * Run scripts/generate_ast_stub.php against PHP master.
 * Update version in php_ast.h to remove dev suffix.
 * Update version, release date in package.xml.
+* Check whether "The current version" in README.md is up to date.
 * Run `pecl package package.xml`.
 * Run `pecl install ast-XXX.tgz`.
 * Commit.