bug fixes
Merge pull request #423 from nelenkov/dev

bug fixes
fixed handling of non-alphanum developername; properly unescape non-ASCII chars in name
try to handle comment reply errors better; limit reply size
Merge pull request #425 from nelenkov/dev

Better developer name and comment reply error handling, see #424
preparing for v2.5.1 release
bumped versionName as well
Merge pull request #426 from nelenkov/dev

preparing for v2.5.1 release