scalaz 7.2.15 released

[Kenji Yoshida]

Hi everyone.
 
scalaz 7.2.15 released!

"org.scalaz" %% "scalaz-core" % "7.2.15"

for Scala binary versions 2.10, 2.11, 2.12 and 2.13.0-M2.

Thanks to all contributors. 
This is 15th maintenance release for the 7.2.x series.
It's a drop-in replacement for 7.2.0 to 7.2.14 which is fully binary backwards compatible (tested with MiMa).

There are some new features and changes. see https://github.com/scalaz/scalaz/wiki/7.2.15

Cheers.
Kenji (@xuwei-k)