Added the ability to render text spans and blocks on IASCIIArt displays directly without manually having to mash it.
Handles negative offsets, clipping, etc.
Fixed a number of annoying bugs around foreground and background default colours.
Setting these for an IPixelled display will fill the pixel buffer accordingly.
Fixed issues caused by routines with no awareness that foreground colour is a thing (e.g. rgb persistence, pulse etc)
Fixed some more PHP7.4 only covariance issues when mixing interfaces, traits and base classes.
Added the ability to render text spans and blocks on IASCIIArt displays directly without manually having to mash it.