ImGui_GM v1.0.5

hiya, just a tiny update! added some missing window-related, memory editor widget, and some misc wrappers; also a few internal changes!

Added:

• ImGui.LogText
• ImGui.SetWindowPos
• ImGui.SetWindowSize
• ImGui.SetWindowCollapsed
• ImGui.SetWindowFocus
• ImGui.MemoryEditorShowWindow
• ImGui.MemoryEditorDrawContents

Changed:

• ImGui class now creates context via GML (stored as ImGui.__Context) and passes it to __imgui_initialize. __imgui_initialize now returns a pointer to the context if success or a null pointer if fail
• ImGui.__Update now passes GUI width & height (previously window sizes) to __imgui_update
• Moved ImGui.__Uniform into a check for __imgui_native, removing requirement for shader to be included when using native rendering