Changes from the preceding version include:
- Added Zenodo DOI and full workshop citation to README and homepage of workshop
- Clarified GitHub 'by itself' versus 'with an IDE' and made minor edits to both original topics in service of making this distinction clear
- Tweaked sidebar to make a new 'background' section to house the workflows module and some of the Git-specific background that previously was the start of what is now called the 'GitHub by itself' module
- Overhauled all IDE-related tutorials to use new, more clear images and explanatory text for both RStudio and Positron