Releases 0.15, 0.16 and 0.17 (in prep) come with some changes worth mentioning. So, here we mention them. At length….
Some changes are "breaking" and others provide new, better ways to do things. Many are cleanups which were needed for a while. As 0.17 is not technically cut, it may have additional changes. So, sit back and read about some of the improvements that you may not yet have learned about.