v4

• Added an ImGUI based GUI module.

v3

• Added StringBuffer and StringBuilder from Pandemonium.
• Fixed new c++20 warnings.

v2

• Various small improvements.
• Also ported the 3d camera helpers to the Immediate renderer.
• Added Camera2D::set_size_to_render_target() helper method.
• Grab some of the camera helper methods from Pandemonium.
• Now current renderbuffer size is available from the RenderState.
• Always use memnew(), and memdelete().
• Fix build if TOOLS_ENABLED is defined.

v1

Initial Release.