v1.1.0

New functions:

• _set - Set nested ds_map values easily
• _get - Get nested ds_map values easily
• _join - Convert arrays to strings
• _split - Convert strings to arrays
• _indexOf - Find value positions in collections
• _log - Convenience method for show_debug_message

Improvements / bug fixes:

• _spread - Fixed to handle no-arg functions
• _run - Fixed to better handle no-arg functions
• _length - Return -1 for undefined collections