Mu/mu4e 0.9.9.13 release

[Charles-H. Schulz]

After almost 6 months, a new release of mu/mu4e. We are happy to 
announce mu and mu4e 0.9.9.13! have just been released. The following 
key features and improvements have been added:

Change the way the headers are displayed and sorted
Fancy characters now enabled distinctively both for marks and headers
Composing a message is now possible in a separate frame
Ability to display the subject of a thread only on top of it for 
enhanced clarity
Lots of bugs squashed, updates to the documentation (BDDB), as well as 
embedding the News file inside mu4e itself.
You can grab the tarball directly from Github* or wait a bit to get it 
through your distribution channels (details may vary from one 
distribution to another).

None of this would be possible without a team of dedicated individuals: 
Attila, Charles-H.Schulz, David C Sterrat, Dirk-Jan C. Binnema, Eike 
Kettner, Florian Lindner, Foivos S. Zakkak, Gour, KOMURA Takaaki, Pan 
Jie, Phil Hagelberg, thdox, Tiago Saboga, Titus von der Malsburg (and of 
course all people who reported issues, provided suggestions etc.)

We hope you will enjoy this release as much as we do. Happy Hacking!

                    The mu/mu4e Team

* https://github.com/djcb/mu-releases