Merge branch 'PHP-7.1' into PHP-7.2

* PHP-7.1:
  Update SDK version for AppVeyor
  bump versions

diff --cc .appveyor.yml
index d6795136747b2b87b77af82276accc5d803dcd76,5e4a2ae3a485a9e712fd6de393a943c82bed555d..7e64703f3782da6ea6ef6f4c789356531e799f80
--- 1/.appveyor.yml
--- 2/.appveyor.yml
+++ b/.appveyor.yml
@@@ -23,8 -23,7 +23,8 @@@ environment
          PHP_BUILD_CACHE_BASE_DIR: c:\build-cache  
          PHP_BUILD_OBJ_DIR: c:\obj
          PHP_BUILD_CACHE_SDK_DIR: c:\build-cache\sdk
-         PHP_BUILD_SDK_BRANCH: php-sdk-2.1.3
+         PHP_BUILD_SDK_BRANCH: php-sdk-2.1.5
 +        PHP_BUILD_CRT: vc15
          # ext and env setup for tests
          #MYSQL_TEST_PASSWD: Password12!
          #MYSQL_TEST_USER: root