Buffer update glitch on overflowed events

[keesvv]

When the buffer reaches the last line before the prompt, the tcell.Screen instance does not update correctly without s.Sync() being explicitly called. This operation causes the terminal to occasionally tear up, which is not the intended behaviour.

Instead of managing the buffer by myself, it might be a better idea to use tcell's built-in tcell/views package for managing virtual screens/buffers. This also allows for vertical (and possibly even horizontal) scrolling.