3.16 Release Notes

[Allan Day <allanpday gmail com>]

Hi all,

The wiki page for the 3.16 release notes is now up [1], so please take
a minute to add any features or changes you have worked on this cycle.

I did add some entries for feature work that I know about, but they
are very brief, so feel free to elaborate.

Thanks,

Allan

[1] https://wiki.gnome.org/ThreePointFifteen/ReleaseNotes