v2.0.0

Changelog

• d9e45cf Merge pull request #13 from MadAppGang/worktree-new-terminal-commands
• fc9ef1a add gitignore
• cbf2a50 docs!: rewrite the documentation for the slots-only surface, and bump to /v2
• 191e0c7 feat!: a read no longer opens the pane it is reading
• 614e748 feat!: make the slot the only handle a caller ever has
• 6ffddb2 feat: give every slot an invisible twin
• 856d181 fix: the review's medium findings, and two controls that could not fail
• d2674a7 refactor: delete the scope machinery and the primitives-only surface
• 8108b91 refactor: put a Backend port between policy and tmux
• 3cb8118 refactor: put every tmux invocation in backend_tmux.go