Conditionally removes usage of deprecated features

-add macros to test for C++ version and features
to catch_compiler_capabilities.hpp
- replaces dynamic exception specifications (deprecated)
with noexcept in C++ Version >= 11
- defines defaulted copy constructor/move constructors/assignment
in C++ Version >= 11 since their implicit generation is deprecated
under some circumstances.
- fixes #259

include/internal/catch_notimplemented_exception.hpp

@@ -21,7 +21,7 @@ namespace Catch {
         m_what = oss.str();
     }
 
-    const char* NotImplementedException::what() const throw() {
+    const char* NotImplementedException::what() const CATCH_NOEXCEPT {
         return m_what.c_str();
     }