v2.2.0

Release summary — changes since 2.1

• Save the current tab only — a small toggle by the save box saves just the active tab as a session, instead of all tabs.
• "Show tabs" — a saved session's ⋮ menu now has "Show tabs", which lists that session's tabs so you can open them one at a time.
• Smoother tab-adding — when adding tabs to a session from its Show-tabs list, the menu stays open and newly added tabs are briefly highlighted.