1.8.5 Maintenance Release

• Fix regression with singleton sequence of array type (issue #462)
• Correctly handle empty array input to group expression (issue #527)
• Fix bug with outer array when evaluating wildcard (issue #495)

1.8.4 Maintenance Release

• Fix bug in $eval when second arg is an empty array (issue #463)
• Fix bug in toMillis() parsing timezones (issue #477)

1.8.3 Maintenance Release

• Remove incomplete polyfill for Array.from() (issue #432)
• Fix $not to return empty sequence for missing inputs (issue #433)
• Fix RangeError (stack overflow) when querying very large objects (issue #434)

1.8.2 Maintenance Release

• Fix bug with regex usage in partially applied functions (issue #427)
• Fix regression when the $string() function is applied to a top-level array (PR #429)

1.8.1 Maintenance Release

• Fix bug in timezone handling for ISO week date formats (issue #403)

1.8.0 Milestone Release

• New syntax (% parent operator) to select the parent of the current context value (issue #299)
• New function $type to return the data type of the argument (issue #208)
• Added versioning to the documentation site (issue #385)
• Fixed bugs #382, #387, #396, #399

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

1.6.5 Maintenance Release

• Fix concurrency bug in chain operator (issue #335)
• Fix flattening login in map operator (issue #314)
• Fix message inserts for errors thrown in function bodies (issue #297)
• Limit array size allocatable by range operator to ten million entries (issue #240)

1.6.4 Maintenance Release

• Fix performance regression (PR #292)
• Fix bug in $each function (PR #293)

1.6.3 Maintenance Release

• Fix es5 build and polyfills to enable test suite to (mostly) run in Nashorn (PR #288)
• Extra polyfill required for running jsonata-es5.js in IE 11 (PR #289)