monkey v5.2

• Hash literal now use ":" as key-value separator instead of "=>".
• Arrow function expression now use '=>' instead if '->'.
• Add experimental support for using go-lang's package functions and types.

monkey v5.1

• Add support for User Defined Operators.
• let statement now support placeholder(_) variable.
• Add simple meta-operators for array.
  • ~+
  • ~-
  • ~*
  • ~/
  • ~%
  • ~^
• for-in loop now support iterate over channel object.

monkey v5.0

• Add support for functions to return multiple values.
• Fix some typo mistakes.

monkey v4.0

• Add 'unsigned int' builtin data type(let u = 10u)
• Add simple class support.
  • inheritance and polymorphism.
  • Indexer(which support multiple indexer and multiple indexer parameters)
  • operator overloading
  • property with getter and setter
  • static method/field/property

monkey v3.0

• Enhancement for array and hash assignments(last comma is optional)
• Improve REPL(With realtime syntax highlight).
• Call function without parentheses if the function does not has any parameters
• Add Arbitrary-precision fixed-point decimal type.
• fixed bug with return not working inside of loops.
• Enhancement for hash handling, (e.g. hashObj.key = value)

monkey v2.0

• Add short arrow(->) support for function
• Add list comprehension and hash comprehension support
• Add support for tuples.
• Add some methods for integer and float e.g. 10.upto(15)

monkey v1.0

Initial release.