Add missing namespaced alias target in CMakeLists

add missing end of line after warning message

Update project to version 1.5.2

Add Version.hpp file used internally.

This file is not installed and only used internally to do some checks when loading a ldtk project json.

Print loading duration in the API_test example

Create codeql.yml (#30)

fix external levels oading error bug

version 1.0.0 is here

add support for Layer's OverrideTilesetUid

fix hardcoded tile texture coordinates (#14)