Add sol3 dependency

.gitmodules

@@ -16,3 +16,6 @@
 [submodule "inferno/vendor/lua/lua"]
 	path = inferno/vendor/lua/lua
 	url = https://github.com/lua/lua
+[submodule "inferno/vendor/sol2"]
+	path = inferno/vendor/sol2
+	url = https://github.com/ThePhD/sol2

CMakeLists.txt

@@ -53,6 +53,7 @@ include_directories(
 	"${ENGINE}/vendor/glm"
 	"${ENGINE}/vendor/json/include"
 	"${ENGINE}/vendor/lua"
+	"${ENGINE}/vendor/sol2/include"
 	"${ENGINE}/vendor/stb"
 )
 

README.org

@@ -41,6 +41,7 @@ Or
 - [[https://github.com/g-truc/glm][GLM]]
 - [[https://github.com/nlohmann/json][JSON]]
 - [[https://github.com/lua/lua][Lua]]
+- [[https://github.com/ThePhD/sol2][sol3]]
 - [[https://github.com/nothings/stb][stb]]
 
 * References

inferno/vendor/sol2

@@ -0,0 +1 @@
+Subproject commit 27c352149d4b06b96adb0c6a8cd8514aa6cdb9c6