Merge pull request #71 from JohanMabille/xtensor_027

Requires xtnsor 0.27 in CMakeLists.txt

Author: JohanMabille

CMakeLists.txt

@@ -111,7 +111,7 @@ else()
 endif()
 
 # .. xtensor
-set(xtensor_REQUIRED_VERSION 0.26.0)
+set(xtensor_REQUIRED_VERSION 0.27.0)
 if(TARGET xtensor)
     set(xtensor_VERSION ${XTENSOR_VERSION_MAJOR}.${XTENSOR_VERSION_MINOR}.${XTENSOR_VERSION_PATCH})
     # Note: This is not SEMVER compatible comparison