Add 03y to contributors list

[03y]

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[Mm2PL]

Heads up: you are PR-ing from your [03y:]master branch. This will make a mess every time your commits get merged into Chatterino:master because it will end up there twice:

• once in history of your master branch and
• once from updates from Chatterino:master

For future PRs please create a new branch based off Chatterino:master for each PR you make :)

[03y]

Heads up: you are PR-ing from your [03y:]master branch. This will make a mess every time your commits get merged into Chatterino:master because it will end up there twice:

* once in history of your master branch and once from updates from `Chatterino:master`

For future PRs please create a new branch based off Chatterino:master for each PR you make :)

I will keep that in mind. Thank you.