Log Message:
Update to 0.4.5, provided by Miguel Mendez in PR#29904.

0.4.4 -> 0.4.5

- It's now possible to use STARTTLS to encrypt SMTP traffic.
- Some memory leaks were fixed (a bunch of missing g_free()).
- Parts of the code were edited to conform to the FreeBSD coding style
  guide.
- A new application icon is included.
- The man page was updated.