resovled errors in type utility file, added functionality to array utility file

include/ck/utility/array.hpp

@@ -38,6 +38,8 @@ struct Array
     }
     __host__ __device__ constexpr const TData* begin() const { return &mData[0]; }
     __host__ __device__ constexpr const TData* end() const { return &mData[NSize]; }
+    __host__ __device__ constexpr TData* begin() { return &mData[0]; }
+    __host__ __device__ constexpr TData* end() { return &mData[NSize]; }
 };
 
 // empty Array

include/ck/utility/type.hpp

@@ -165,7 +165,7 @@ using std::is_reference_v;
 using std::is_trivially_copyable;
 using std::is_trivially_copyable_v;
 using std::is_unsigned;
-using std::remove_const;
+using std::remove_const_t;
 using std::remove_cv;
 using std::remove_pointer;
 using std::remove_reference;