Bump version number for git-publish 1.8.2 release

Changes since 1.8.1:
- Add --send-email-args argument to pass git-send-email(1) arguments
- Show a clear error message when the base branch does not exist

Signed-off-by: Stefan Hajnoczi <stefanha@gmail.com>

Author: stefanha

git-publish

@@ -23,7 +23,7 @@ import shutil
 import subprocess
 import locale
 
-VERSION = '1.8.1'
+VERSION = '1.8.2'
 
 tag_version_re = re.compile(r'^[a-zA-Z0-9_/\-\.]+-v(\d+)$')
 git_email_policy = email.policy.default.clone(max_line_length=0, linesep='\n')