Removing tidyverse install from ggplot lesson

[sstevens2]

fixes #237

This change has us install and load ggplot2 instead of the tidyverse which we know takes a while to install on the AWS machines in particular. It also loads readr and dplyr for the ggplot episode.

[github-actions]

Thank you!

Thank you for your pull request 😃

🤖 This automated message can help you check the rendered files in your submission for clarity. If you have any questions, please feel free to open an issue in {sandpaper}.

If you have files that automatically render output (e.g. R Markdown), then you should check for the following:

• 🎯 correct output
• 🖼️ correct figures
• ❓ new warnings
• ‼️ new errors

Rendered Changes

🔍 Inspect the changes: https://github.com/datacarpentry/genomics-r-intro/compare/md-outputs..md-outputs-PR-243

The following changes were observed in the rendered markdown documents:

 03-basics-factors-dataframes.md |   2 +-
 06-data-visualization.md        |  45 ++++++++++++++++++++++++++--------------
 depth.pdf                       | Bin 45066 -> 45066 bytes
 md5sum.txt                      |  36 ++++++++++++++++----------------
 4 files changed, 49 insertions(+), 34 deletions(-)

What does this mean?

If you have source files that require output and figures to be generated (e.g. R Markdown), then it is important to make sure the generated figures and output are reproducible.

This output provides a way for you to inspect the output in a diff-friendly manner so that it's easy to see the changes that occur due to new software versions or randomisation.

⏱️ Updated at 2023-12-04 22:42:50 +0000

[sstevens2]

Please especially review for if we need to load any other tidyverse packages for this lesson.

[naupaka]

Thanks!!