Change the YAML format to list of tracks
Implement HashWithIndifferentAccess on the side
I guess that's a typo
Update README.md
Merge pull request #15 from AgIt0/fix_typo

I guess that's a typo
Update README.md
Missed an S
Merge pull request #18 from AgIt0/fix_typo

Missed an S
Merge pull request #16 from svetliomihailov/patch-1

Update README.md
Merge pull request #17 from svetliomihailov/patch-2

added Should return a new Playlist. for a few methods
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Merge pull request #19 from VLatunoV/patch-2

Update README.md
Add game of life problem
Point the website to the better location
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Add boilerplate for game of life
Merge pull request #22 from VLatunoV/patch-3

Update README.md
week1 done
week0 added
week2 done