Replace asserts with clamping in color constructor

[MatusGuy]

No description provided.

[HybridDog]

In my opinion both the assertion and the clamping are bad because values outside $[0,1]$ are physically plausible (at least if they are in linearised sRGB). Values larger than 1 correspond to brighter light and values smaller than 0 correspond to wide-gamut colours, i.e. colours outside the sRGB gamut.

What is the purpose of the replacement?

[MatusGuy]

Some people kept getting mad about the game aborting when a color exceeds 1 or goes under 0