spruce-release Release v1.5.0

New Features

• Added (( file ... )) operator to include file contents as text blocks to
  allow file to be retained in it natural form.
  • Can use literal string or reference as argument
  • Relative to path specified in SPRUCE_FILE_BASE_PATH environment variable,
    or whatever directory spruce is run in if not set.
  • Absolute paths can also be set -- prefix with / to specify.
• Added (( join "," meta.list )) operator to join the values in meta.list with
  the separator listed in the first-argument.