support true color

[micimize]

true color is a spec for sending the full rgb range with every character.

[IonicaBizau]

👍

[romgrk]

Status on this? I see https://github.com/chjj/term.js/blob/master/src/term.js#L3439, but it seems to only store the approximated color. Is it fault of having no place to store the RGB color?

[IonicaBizau]

/cc @chjj 🔔