How about a popup menu for the tabs?

[edwinyzh]

How about add a context menu for the tabs with the following menu items? (or at least add to the File main menu):

• Close All Tabs (must have)
• Close Other Tabs (nice to have)

Thanks.

[GitHubRulesOK]

covered in
#371
#713

Workaround is use Ctrl+N to open new window then close first
or use Ctrl+Shift+N then close other window(s)