1.7.0 Milestone Release

• New syntax (@ operator) to support cross-referencing and complex data joins (issue #333)
• New syntax (# operator) to get current context position in sequence (issue #187)
• Equality operators (=, !=) now perform deep object/array comparison
• New functions
  • $error - Explicitly throw an error with message (issue #167)
  • $assert - Throw error (with message) if assertion evaluates to false (issue #369)
  • $single - Returns the single value in an array (issue #348)
  • $encodeUrl, $encodeUrlComponent, $decodeUrl, $decodeUrlComponent - URL/URI helper functions (issue #103)
  • $distinct - Returns array with duplicate values removed
• Enhanced functions
  • $reduce - Now works with a 4-argument function parameter (issue #102)
  • $number - Can now cast numeric strings with leading zeros (issue #368)
  • $string - Now has optional second argument to "prettify" objects (issue #334)
• Minimum node.js runtime v8 (dropped support for v6). Added support for Node 12.
• Fixed bugs #316, #332, #349