2nd Anniversary Edition

Thanks a lot everyone, for the two years of monotone line-icons!

• 🥳 Arcticons turns 2 years old!
• 🎉 159 new or updated icons (thanks Kaiserdragon2, Quantenzitrone, JoelChrono12, Dgcampea, Aircan, PoorPocketsMcNewHold, 0slav, Ayecptn, KempfCreative, Petlyh, Tadas32, Lavin-Tom, Kaanelloed, NicoWeio , Ourslfs, Plasmid-zz, Basings, Akp 37!)
• 🔥 4852 icons in total!