Since we split the 0.18 branch I have pushed a couple of commits to the master branch. Some of them can be backported to v0.18:
git commit a14b99e77
git commit 2f2d50535
git commit bb6e4e6ad
git commit 23ecb8eac
git commit ca7770b80
git commit 51fcdd2c0
git commit 805ccd8deb
git commit 347156403
git commit 094dda5900d
git commit 925cffc1535
git commit 7dfeb801a
git commit de44a747f
git commit 8d5d25da2