Lots of fixes and compatibility with WordPress 3.5.
- Fixed bug where having a colon in the subject caused the subject to get truncated
- Added donation link to admin screen
- Fixed bug where #img# captions with double-byte characters were not working
- Fixed bug where default settings were corrupt
- Fixed several bugs in tag detection logic
- Fixed bug where non-base64 and non-quoted-printable sections were not converted to utf-8
- Fixed bug where the end filter wasn’t removed from the post
- Add additional logging to attachment upload process
- Changes to support WP 3.5