Merge pull request #270 from rjernst/bump_6.8

bump version to 6.8.15

Author: rjernst

CMakeLists.txt

@@ -11,7 +11,7 @@ set(DRIVER_BASE_NAME elasticodbc CACHE STRING
 	"The base name of the driver")
 
 # driver's version
-set(DRV_VERSION 6.8.14)
+set(DRV_VERSION 6.8.15)
 set(VERSION_QUALIFIER $ENV{VERSION_QUALIFIER} CACHE STRING
 	"Extra string to append to the install directory name")