Fixes #11969

Fixes issue of change terminal line-height breaking scrolling
Fixes #9822

Fixes #6602

Going to hold off on this until sourcelair/xterm.js#224 is merged.

This reverts commit 0a5a071c.

Fixes #10100

Part of #9747

Fixes #9800

Terminal.element is focused when text is focused in the terminal, the cursor
should be styled as such.

Part of #9704

When ctrl+m is pressed (only use default keybinding for now), tab will not be
passed to the pty and instead will propogate up and shift focus.

Part of #6731

Currently using the xterm.js PR branch

Fixes #7045

Fixes #7541

Fixes #8553

Fixes #8525

Uses editor.cursorBlinking === 'blink'

Fixes #8085
Fixes #7616

Fixes #7670

See #7732

Focus previous/next are temporary until tabs are visualized in the UI

Fixes #7445

inline-block causes some strange looking selections

Fixes #7352

Fixes #75