How about add a feature? multiple tab terminal

[liu2hai]

hi, toggle-terminal is a great vim plugin. i love it. how about add this feature, that's split multi tab in toggle-terminal buffer, each tab has a terminal job, you can new a tab and close it, i think it's a nice feature.

[pakutoma]

Looks very good, but I don't use this plugin long time. Pull request welcome😉