Update Ghoul version

Make the modules depend on C++14
Change the OpenSpace code to the new Ghoul version

include/openspace/properties/templateproperty.inl

@@ -22,6 +22,8 @@
  * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                                         *
  ****************************************************************************************/
 
+#include <ghoul/logging/logmanager.h>
+
 namespace openspace {
 namespace properties {
 

modules/newhorizons/util/instrumentdecoder.cpp

@@ -24,6 +24,9 @@
 
 #include <modules/newhorizons/util/instrumentdecoder.h>
 
+#include <ghoul/misc/assert.h>
+#include <ghoul/logging/logmanager.h>
+
 namespace {
     const std::string _loggerCat  = "InstrumentDecoder";
 	const std::string keyDetector = "DetectorType";

modules/newhorizons/util/sequenceparser.cpp

@@ -28,6 +28,8 @@
 #include <openspace/util/spicemanager.h>
 #include <modules/newhorizons/util/decoder.h>
 
+#include <ghoul/logging/logmanager.h>
+
 namespace {
 	const std::string _loggerCat = "SequenceParser";
 	const std::string keyTranslation = "DataInputTranslation";

src/properties/propertyowner.cpp

@@ -24,6 +24,8 @@
 
 #include <openspace/properties/propertyowner.h>
 
+#include <ghoul/logging/logmanager.h>
+
 #include <algorithm>
 #include <assert.h>
 

support/cmake/module_definition.cmake

@@ -76,7 +76,7 @@ endmacro ()
 
 # Set the compiler settings that are common to all modules
 function (set_common_compile_settings target_name)
-    set_property(TARGET ${library_name} PROPERTY CXX_STANDARD 11)
+    set_property(TARGET ${library_name} PROPERTY CXX_STANDARD 14)
     set_property(TARGET ${library_name} PROPERTY CXX_STANDARD_REQUIRED On)
 
     if (MSVC)