Upgrade xterm to 3.7.0 Refs: #3178

[weichensw]

#2697 and #2793 both need a new version of xterm, and 3.7.0 just got released.

[albinekb]

Sweet!

[omgaz]

Also closes #3178

[jocull]

This one should take precedence over #3178 👍

[JCMais]

Awesome, thank you @xbtsw

[weichensw]

@albinekb There's no merge button available for me. Please kindly merge.

[dcalhoun]

Would love to see this merged and published, as it will fix issues like jestjs/jest#6494.

[chabou]

Yes, we need to merge this ASAP.

[furudean]

What is the status on this?

[albinekb]

Waiting on someone else to approve, then we can merge. I have tested on macOS 10.12 and it works as expected.

[furudean]

Can someone take a look at this? It's one line to approve 😓

[chabou]

It doesn't work as expected with many opened panes.

How to reproduce:

• Start Hyper. Type some characters. No problem.
• Open a new pane (vertically or horizontally). Type some characters, no problem.
• Give focus back on first pane, type some characters: they are duplicated.

I think there is some problem with term reattachment and listeners.
I'll try to debug this but help would be appreciated 🙌

[chabou]

Duplicate characters when many panes opened

[chabou]

Thank you for your help @xbtsw 🙏

I'm am really sorry but this PR won't be merged 😞
Every xterm new version comes with some minor changes that should be addressed.
Due to the lack of real automatic tests in Hyper, updating xterm must be manually and heavily tested.

Closed in favor of #3255