Calling Terminal.refresh after setting line-height on .xterm should apply the line-height

[Tyriar]

Setting line-height on .xterm is a way to globally change the line-height the problem is that it's harder than it should be to apply these changes.

Details

• Browser and browser version: Chrome 53
• OS version: Ubuntu 16.04
• xterm.js version: 76a890a

Steps to reproduce

1. Start demo
2. Set line-height: 2 on .xterm
3. In console call term.refresh(0, term.rows - 1);, line-height does not apply
4. Need to trigger Terminal.resize or add a line to the buffer to trigger the update

[Tyriar]

I'm closing this off to keep out issue count lower as it hasn't gained any traction, is stale or is not worth tracking.