Major book refactoring and revision

[TomasBeuzen]

This PR includes:

• General structural changes to book and repo (closes: Add vscode and jupyterlab to "1.3. Python IDEs" #28)
• Added a preface and introduction (closes: Add acknowledgements section #31, closes: Add Introduction #32)
• Move some chapters to appendices

[ttimbers]

When are you planning on merging this PR? I am going to heavily use this book for teaching after reading week and I need to get the links in order for the course a bit before then. Also, do you need my review on this?

[TomasBeuzen]

@ttimbers not planning on merging anytime soon, like 2-3 months, (also won't need reviews until then), I'm going to keep developing here and then branch off this PR too. So you can go ahead and refer to the book as it is for the upcoming course.

[ttimbers]

But will the students miss all your new good things then?

[TomasBeuzen]

Okay - change of plan. I'll finish refactoring and will merge this by the end of the week (this will push the new directory/site structure). Then I'll continue developing chapter-by-chapter with new PRs and will push when they're ready (these won't change the structure, just the content, so your links should be fine).

[TomasBeuzen]

@ttimbers - this is almost ready to go (I'll merge later today or on Tuesday after a final read-through). This PR includes:

• General structural changes to book and repo
• Add a preface and introduction
• Move some chapters to appendices

At this point, I won't be changing the structure of the book/repo anymore, I'll just be updating or adding to it. But feel free to see the netlify preview below. So any links you make should be good. You don't need to review any of the new material yet (preface, introduction, setup) as I would classify them as still WIP and will make separate PRs when I'm ready for them to be reviewed. I will note that I added our pictures and a short bio here. LMK if you don't want your picture there - we can edit the bios when I make a separate PR for that section?

[TomasBeuzen]

@ttimbers - this is ready to merge. The only thing I'll note is that I significantly shortened the "RStudio setup" section. As this is going to be a text book I'd like it to stay relevant for as long as possible, so I'm trying to remove highly specific instructions like we had, and instead refer readers to the relevant documentation.

[ttimbers]

Sounds good to me! Thanks for pushing this refactoring, I am going to merge now as I am needing to get the links for the course today.