The Three Wise Men came with their camels and brought incense, gold, and Crystal!
We’ve written a blog post summarizing the changes in this release: Crystal 1.3.0 released! - The Crystal Programming Language. While we have tested it against several known and sizeable projects, that doesn’t preclude the existence of regressions. If you find an issue, please check the issue tracker and file a bug: it will be fixed in a patch version.
The full changelog is here: Release 1.3.0 · crystal-lang/crystal · GitHub .
The brew formula is not yet merged.