diff --git a/.gitignore b/.gitignore
index 688c76f..d906efb 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,5 @@
 /cmake-build-debug/
 session
-/input/
\ No newline at end of file
+/input/
+/xtensor/
+/xtl/
diff --git a/CMakeLists.txt b/CMakeLists.txt
index d14c298..4423796 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -15,4 +15,4 @@ include(FetchContent)
 FetchContent_Declare(cpr GIT_REPOSITORY https://github.com/libcpr/cpr.git GIT_TAG 100cf2050be7619430a615cd0d580b33c62fde6b)
 FetchContent_MakeAvailable(cpr)
 
-target_link_libraries(AdventOfCode2022 PRIVATE cpr::cpr)
\ No newline at end of file
+target_link_libraries(AdventOfCode2022 cpr::cpr)
\ No newline at end of file
diff --git a/src/util.h b/src/util.h
index c776783..f80419d 100644
--- a/src/util.h
+++ b/src/util.h
@@ -1,8 +1,7 @@
-
 #pragma once
 
 #include <vector>
 #include <numeric>
 #include <string>
 #include <tuple>
-#include <iostream>
+#include <iostream>
\ No newline at end of file
diff --git a/xtl b/xtl
new file mode 160000
index 0000000..e697c91
--- /dev/null
+++ b/xtl
@@ -0,0 +1 @@
+Subproject commit e697c91e2a3ac571d120d2b093fb3b250d060a7d