Add a way to reset render target to default (e.g. screen)
Add a way to swap some types of objects
Add method to retrieve SDL_RendererInfo
Add method to set color component multipliers
Provide Set*Mod with default values, such so no-arg call will reset modifier to default
Use int type for flip argument, as it's a bitfield and not a real enum
Provide default arguments for Copy()
Split demo into multiple programs to keep them simple and clear
Add rendertarget demo
Get rid of magic constants in rendertarget demo
Merge branch 'master' of github.com:AMDmi3/libSDL2pp