3.0.0: Compiler continuation

• Made compatible with PHP 7.4 - refrain using {} for string offsets
  (@thekid)
• Merged PR #45 - Multiple errors - @thekid
• Changed compiler to emit deprecation warnings for Hack language style
  arrow functions and compact methods using ==>, instead advocating the
  use of PHP 7.4 with the fn keyword; see issue #65
  (@thekid)

2.13.0: PHP 7.4 features

• Added preliminary PHP 8 support - see #62 (@thekid)
• Added support for PHP 7.4 features
  • Implemented numeric literal separator, e.g. 1_000_000_000 - see #61
  • Implemented null-colaesce assignment operator ??= - see #58
  • Implemented support PHP 7.4-style short closures with fn - see #60
  • Implemented support for emitting typed properties in PHP 7.4 - see #57
    (@thekid)

2.12.0: PHP 7.3 compatibility

• Added support for PHP 7.3
  (@thekid)

Fix path resolution

• Fixed #56: Resolved paths not absolute - @thekid

2.11.0: Filenames in errors

• Merged PR #54: Ensure filenames in errors reflect source files - @thekid

2.10.1: URI loading fixes

• Fixed throw expressions with variables, e.g. () ==> throw $e;.
  (@thekid)
• Fixed URI loading for CompilingClassLoader - this way, loading
  classes via URIs works, and thus e.g. xp test path/to/Test.php.
  (@thekid)

2.10.0: Throw expression

• Merged PR #53: Implement throw expressions - @thekid

2.9.0: Arrow functions with blocks, goto

• Merged PR #52: Implement "goto" statement - @thekid
• Merged PR #50: Allow arrow functions with blocks - @thekid

2.8.0: Echo

• Merged PR #47: Allow empty catch type to catch all exceptions - @thekid
• Merged PR #44: Implement echo statement - @thekid

2.7.0: Compile only mode

• Merged PR #43: Add "-n" command line option to compile only - @thekid
• Merged PR #42: Raise errors when members are redeclared - @thekid