v0.9.0

⚠️ Breaking Changes

• Syntax for continue changed to return [%-objects%] (#30)
• Syntax for null changed to null

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• Add experimental support for implementing interfaces
• Add custom conditions
• Add an expression for getting a raw expression from a custom expression
• Preserve null during casting (#10)
• Improve error messages (#15)
• Deal with UnparsedLiterals properly (#16, #18)
• Add custom aliases for object for readability (#20)
• Implement debug messages properly (#21)
• Fix type coercion (#22)