Janet 1.4.0

This release brings fxes and updates to jpm and the core library. Stacktraces should now be easier to read as they use line and column information instead of byte offsets. Also added some simple compile time error checking to functions that are called with the the wrong arity.

Pckages can be installed via jpm install json, where json is a package name in https://github.com/janet-lang/pkgs, or any other package registry that is set via the JANET_PKGLIST environment variable. A package registry is just a package that follows the format in https://github.com/janet-lang/pkgs.git.

Changelog

• Add quit function to exit from a repl, but not always exit the entire application.
• Add update-pkgs to jpm.
• Integrate jpm with https://github.com/janet-lang/pkgs.git. jpm can now install packages based on their short names in the package listing, which can be customized via an env variable.
• Add varfn macro
• Add compile time arity checking when function in function call is known.
• Added slice to the core library.
• The */slice family of functions now can take nil as start or end to get the same behavior as the defaults (0 and -1) for those parameters.
• string/ functions that take a pattern to search for will throw an error when receiving the empty string.
• Replace (start:end) style stacktrace source position information with line, column. This should be more readable for humans. Also, range information can be recovered by re-parsing source.