Add timestamps for video 25: Chris' keynote

[bsenst]

References towards #11 Closes #15

Description Add timestamps for video 25: Chris' keynote

[reshamas]

Confirming I have:

• [x] added timestamps to the video here: https://youtu.be/RXODDVK7B-g
• [x] checked this one off the list

Thanks @bsenst!

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