7.5.0: Intersection types

• Merged PR #28: Intersection types (see xp-framework/compiler#117 and
  https://wiki.php.net/rfc/pure-intersection-types)
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• Merged PR #29: Add error source (file and line) to message - @thekid

7.4.0: Native callable syntax

• Merged PR #27: Implement first-class callable syntax - @thekid

7.3.0: Declare directives

• Merged PR #25: Add support for declare construct - @thekid

7.2.0: Never return type

• Merged PR #24: Add support for never return type - @thekid

7.1.1: Yield expression fixes

• Fixed yield without expression in various situations - @thekid

7.1.0: PHP enum support

• Merged PR #23: Add syntactic support for PHP 8.1 enums. Implementation
  in the compiler is in pull request xp-framework/compiler#106
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7.0.4: Standalone operator fix

• Fixed Call to undefined method ::emitoperator() caused by standalone
  operators, see xp-framework/compiler#105
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7.0.3: Match expressions fix

• Fixed children() accessor for match expressions and conditions, see
  xp-framework/compiler#101
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• Fixed PHP 8.1 compatiblity by ensuring we do not pass NULL to strlen()
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7.0.2: Argument parser fix

• Fixed argument parser to queue correctly when handling ambiguity between
  named arguments and global constants (see xp-framework/compiler#98)
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7.0.1: Braces fix

• Fixed xp-framework/compiler#98: (fstat(STDOUT)) causes a parse error
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