Remove submodule, use the system Sprout

.gitmodules

@@ -1,6 +1,3 @@
-[submodule "lib/sprout"]
-	path = lib/sprout
-	url = https://github.com/bolero-MURAKAMI/Sprout.git
 [submodule "lib/Catch2"]
 	path = lib/Catch2
 	url = https://github.com/catchorg/Catch2.git

CMakeLists.txt

@@ -5,6 +5,8 @@ list (APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules)
 include(shared_git_project)
 include(CTest)
 
+find_package(Sprout REQUIRED)
+
 set(DUCKHANDY_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}")
 if (BUILD_TESTING)
 	set(BUILD_TESTS CACHE BOOL ON)
@@ -30,15 +32,16 @@ target_compile_features(${PROJECT_NAME}
 
 target_include_directories(${PROJECT_NAME}
 	INTERFACE ${CMAKE_CURRENT_SOURCE_DIR}/include
-	INTERFACE ${CMAKE_CURRENT_SOURCE_DIR}/lib/sprout
 )
+target_include_directories(${PROJECT_NAME} SYSTEM
+	INTERFACE ${SPROUT_INCLUDE_DIRS}
+)
+
 target_compile_definitions(${PROJECT_NAME}
 	INTERFACE SPROUT_NO_CXX11_NUMERIC_LIMITS
 	INTERFACE SPROUT_USE_TEMPLATE_ALIASES
 )
 
-add_subdirectory(lib/sprout)
-
 if (BUILD_TESTING)
 	add_subdirectory(test/unit)
 endif()

include/duckhandy/implem/int_conv.hpp

@@ -19,9 +19,9 @@
 #define id4754A95F12BE4ADEA65642A056A51907
 
 #include "duckhandy/implem/reversed_sized_array_bt.hpp"
-#include "sprout/math/log10.hpp"
-#include "sprout/math/abs.hpp"
-#include "sprout/math/ceil.hpp"
+#include <sprout/math/log10.hpp>
+#include <sprout/math/abs.hpp>
+#include <sprout/math/ceil.hpp>
 #include <cstddef>
 #include <array>
 #include <limits>

include/duckhandy/lexical_cast.hpp

@@ -22,11 +22,11 @@
 #include "sequence_bt.hpp"
 #include "MaxSizedArray.hpp"
 #include "has_method.hpp"
-#include "sprout/math/log10.hpp"
-#include "sprout/math/log2.hpp"
-#include "sprout/math/pow.hpp"
-#include "sprout/math/abs.hpp"
-#include "sprout/limits.hpp"
+#include <sprout/math/log10.hpp>
+#include <sprout/math/log2.hpp>
+#include <sprout/math/pow.hpp>
+#include <sprout/math/abs.hpp>
+#include <sprout/limits.hpp>
 #include <type_traits>
 #include <utility>
 #include <cstdint>

lib/sprout

@@ -1 +0,0 @@
-Subproject commit 6b5addba9face0a6403e66e7db2aa94d87387f61