I've landed my first compiler PR for golang/go 🎉
It optimizes `[]byte(str1 + str2)` conversions by making them a single step instead of first concatenating the string and _then_ copying the result in a new slice.
https://github.com/golang/go/commit/fe69121bc538260cf91f11dab705335b690e51a3
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Admittedly, it really took handholding and patience from the Go team there, which I really appreciate 😅
On to the next one!
