release-0.4

This release updates our examples to include demonstration of new features.

New features in this release include:

• The pragma built-in command.
  • This allows getting/setting interpreter flags.
  • Currently the only supported pragma is pragma("strict");, but this might change in the future.
• Support for string matching against regular expressions, via the match() function.
  • This supports captures as well as truthiness testing.
• The registration of all known environmental-variables at startup-time.
  • Each variable is prefixed with a $ symbol, which should be familiar to shell-users.