Originally the plan was to have two chapters about reading text files, a brief introduction in the whole game, and then a more detailed exploration later in the book. This organisation didn't seem to work very well because the second chapter didn't have much content, so I've removed it, integrating its content elsewhere in the book:
* Column parsing types moved back into data-import
* Specifics of parsing various data types (e.g. `col_number()`, `col_date()`, and `col_factor()`) moved into the corresponding data type chapters.
* String encoding has moved to the strings chapter
While I was in here I also removed the unused `import-other.qmd`; we had planned to survey other options but I no longer think this is worth it.
* Add draft/outline of spreadsheets
* Finish reading from Excel
* Write to Excel + consistency edits
* Add pkgs for writing Excel files
* Release the 🐧s
* Reogranize to highlight tibble/data.frame diffs
* Write again
* Add spreadsheets reference + rename_with janitor
* Move janitor to TO DO in rectangular data
* Need to load tidyverse
* Show csv file
* Add TO DO note
* Use students instead of challenge file in this chp
* Quiet down some of the redundant messages
* Add bit on reading in multiple files
* Fix up students example
* Revert back to old dataset to match spreadsheets chapter
* Fix typos
* Use US spelling
* Comments from Hadley
* Incorporate Hadley's suggestions
Co-authored-by: Hadley Wickham <h.wickham@gmail.com>