CLI interface

hare-wren includes the hwren command for running Wren programs with the hare-wren runtime and standard library.

The command line interface is simple: use hwren <file.wren> to execute a Wren script. The only other configurable parameter is the WRENPATH environment variable, which may be used to override the default import paths (usually /usr/src/wren or similar) with a colon-delimited set of alternative paths.