Changes to functions examples

[shiffman]

These are for timecodes in functions_v4.

• 4:44 - a version with only the unicorn
• 16:14 - simplified lollipops to not use animation or a for loop

Other changes we could do (I'll let @melissa-rodriguez decide and implement these!)

• 11:53 - add a cupcake?
• 21:46 - consider adjusting to be temperature?