5.1.0: XP 12 compatibility

• Made compatible with XP 12 - @thekid
• Added PHP 8.4 to test matrix - @thekid

5.0.4: Nesting level fix

• Fixed an off-by-one in maximum nesting level calculation - @thekid
• Merged PR #15: Migrate to new testing library - @thekid

5.0.3: WrappedFormat indentation fix

• Merged PR #14: Fix WrappedFormat indentation, fixing #13 - @thekid

5.0.2: PHP 8.2 compatibility fix

• Fixed "Creation of dynamic property" warnings in PHP 8.2 - @thekid

5.0.1: PHP 7.0 / 7.1 fix

• Fixed PHP 7.0 and 7.1 compatibility: Call to undefined function
  spl_object_id(), see https://www.php.net/spl_object_id
  (@thekid)

5.0.0: Drop XP 9, add PHP 8.1, XP 11 compatibility

• Made compatible with PHP 8.1 - add ReturnTypeWillChange attributes to
  iterator, see https://wiki.php.net/rfc/internal_method_return_types
• Implemented xp-framework/rfc#341, dropping compatibility with XP 9
  (@thekid)

4.1.0: I/O string representations

• Fixed up file-based input and output tests to clean up temporary files
  they create as their fixture
  (@thekid)
• Made all of text.json.Format, text.json.Input and text.json.Output
  implement lang.Value and provide string representations
  (@thekid)

4.0.1: Iconv warnings fix

• Fixed warnings from iconv library on Un*x systems - @thekid

4.0.0: Drop PHP 5 support

• Implemented xp-framework/rfc#334: Drop PHP 5.6:
  . Heads up: Minimum required PHP version now is PHP 7.0.0
  . Rewrote code base, grouping use statements
  (@thekid)

3.1.2: Annotation syntax

• Implemented RFC #335: Remove deprecated key/value pair annotation syntax
  (@thekid)