0.9.0: Types

• Added support for $arg ==> $arg++ lambdas without argument braces
  (@thekid)
• Fixed issue #8: Member types missing for constructor argument promotion
  (@thekid)
• Fixed issue #7: Ternary operator broken - @thekid
• Fixed issue #6: instanceof does not resolve class names - @thekid
• Implemented support for union types, e.g. int|float, as supported
  by this PHP RFC
  (@thekid)
• Implemented array<int> and array<string, string> as well as
  function types (e.g. (function(int, string): string)) as seen in
  Hack's type system
  (@thekid)

0.8.0: Line numbers

• Ensured line numbers are kept; this is important for tracing
  warnings, errors and exceptions.
  (@thekid)

0.7.0: Parameter annotations

• Improved function, closure, lambda and method node layouts - @thekid
• Fixed closures not being able to use by reference - @thekid
• Implemented parameter annotations via $param: inject - @thekid

0.6.0: Lambda capturing

• Ensured types are checked where natively supported - @thekid
• Implemented capturing locals in lambda expressions - @thekid
• Recorded property types in cached meta data - @thekid
• Implemented support for dynamic new via new $type- @thekid
• Fixed assignment operator - @thekid
• Fixed parameter types - @thekid
• Fixed annotations not having access to class scope - @thekid
• Fixed constant emittance in PHP 7.1+ - @thekid
• Fixed trait declaration - @thekid
• Fixed issue #3: Annotations in package - @thekid
• Fixed issue #4: "xp compile" installation - @thekid

0.5.0: Scope defines cleanup

• Removed unused scope defines - @thekid
• Fixed endless loop for unclosed argument lists - @thekid
• Fixed type annotations not being parsed - @thekid

0.4.0: Annotations performance

• Optimized runtime performance by including annotations as
  metadata inside code, see issue #1.
  (@thekid)
• Fixed annotation parsing - @thekid
• Made xp help compile display something useful - @thekid
• Fixed compatibility with XP7 console streaming - @thekid

0.3.0: Compile subcommand

• Registered xp compile subcommand - @thekid
• Simulated yield from in PHP 5.6 in a limited fashion - @thekid
• Added support for nullable types from PHP 7.1 - @thekid
• Implemented short list(...) syntax from PHP 7.1 - @thekid
• Added support for anonymous classes from PHP 7.0 - @thekid
• Implemented constant modifiers from PHP 7.1 - @thekid
• Added support for comparison operator <=> from PHP 7.0 - @thekid
• Added support for object typehint from PHP 7.2 - @thekid

0.2.0: PHP version specific handling

• Add factory to retrieve emitter for a given PHP runtime - @thekid
• Extract PHP version specific handling to dedicated classes - @thekid
• Ensure compiled code can be loaded for annotation parsing - @thekid

0.1.0: Hello World

• First public release - @thekid