Release 0.10.0 Milestone 1 Forked Off

[Ufuk Celebi-2]

Hey all!

I've forked off the branch for the 0.10.0 milestone release
(release-0.10.0-milestone-1).

All changes that we want in the milestone release need to be cherry-picked
into this new branch.

Feel free to merge any big changes to master now.

– Ufuk