You enter command mode by typing `:` while in navigation mode. You can then
type a command and hit `Enter` to execute it or `Esc` to cancel.
The currently supported commands are:
*`write [path]` save the current spreadsheet. If the path is provided it will save it to that path. If omitted it will save to the path you are currently editing. `w` is a shorthand alias for this command.
*`insert-rows [number]` Inserts a row into the sheet at your current row. If the number is provided then inserts that many rows. If omitted then just inserts one.
*`insert-cols [number]` Just line `insert-rows` but for columns.
*`rename-sheet [idx] <name>` rename a sheet. If the idx is provide then renames that sheet. If omitted then it renames the current sheet.
*`new-sheet [name]` Creates a new sheet. If the name is provided then uses that. If omitted then uses a default sheet name.
*`select-sheet <name>` Select a sheet by name.
*`edit <path>` Edit a new spreadsheet at the current path. `e` is a shorthand alias for this command.
