v0.12.0
- 0.12.0 (2020-07-15) * Add comprehension index optimization. * Add `array.slice` builtin. * Rewrite `==` as just `=`. * Add a `--dump` flag to get specific debug info. * Fix: Some uses `,` not `.` for multiple declarations. * Add support for declaring rules using `:=`. * Improve warning about new packages. * Add `trace` builtin. * Allow prefixing data into packages. * Allow :load-ing JSON and YAML files from the REPL.