Tutorial notebook wishlist

[lilyminium]

Ongoing list of notebooks to make:

• Alignments
• RMSD/F
• PCA
• Creating a custom TopologyAttr
• Helix analysis (Add helix analysis notebook #126)
• Hydrogen bonds (hydrogenbond analysis notebook #105)

[orbeckst]

I'd call this a whish-list and possibly something where other people can also contribute.

[lilyminium]

Closed by #126 and #133. Future notebook wishlists should be a new issue.