Great to reach this milestone with April. Since the linked YouTube presentation, its code base has changed by about 95%, I've fixed hundreds of bugs and added dozens of functions from Dyalog's online collection to its standard library. There's still plenty to be done and many possible applications of April, but this is the point where the compiler has substantially fulfilled my vision of what it should be.

Release announcement: https://github.com/phantomics/april/releases/tag/v1.0

also see past discussion: https://news.ycombinator.com/item?id=24434717

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