install the new headers

CMakeLists.txt

@@ -119,6 +119,7 @@ set(${PROJECT_NAME}_HEADERS
     include/${PROJECT_NAME}/optimization/quadratic_problem.h
     include/${PROJECT_NAME}/piecewise_curve.h
     include/${PROJECT_NAME}/polynomial.h
+    include/${PROJECT_NAME}/polynomial_1d.h
     include/${PROJECT_NAME}/python/python_definitions.h
     include/${PROJECT_NAME}/quadratic_variable.h
     include/${PROJECT_NAME}/se3_curve.h
@@ -127,7 +128,8 @@ set(${PROJECT_NAME}_HEADERS
     include/${PROJECT_NAME}/serialization/eigen-matrix.hpp
     include/${PROJECT_NAME}/serialization/registeration.hpp
     include/${PROJECT_NAME}/sinusoidal.h
-    include/${PROJECT_NAME}/so3_linear.h)
+    include/${PROJECT_NAME}/so3_linear.h
+    include/${PROJECT_NAME}/so3_smooth.h)
 
 add_library(${PROJECT_NAME} INTERFACE)
 modernize_target_link_libraries(