chatterino2/docs/notes/TCtabsAndSplits.md

1. open a tab (& connect to a channel)
2. open a 2nd tab (& connect to a channel)
3. open a new split (& connect to a channel)
4. move a split to a different tab
5. change tab order
6. rename a tab
7. close a split
8. close a tab
9. change a channel in a tab/split