v0.20.1

Updates from v0.19.3

• Updated
  • Added the same directory as a current parsing file to a search path for using.
  • Introduced File#getUtf8Char() to get directly UTF8 character from a File object including $stdin.
  • Introduced newly case-when expression for trial.
    • See case-when for details.
  • Supported a different variable name from an object key in assignment, declaration, and function arguments.
    • var { x: a, y: b } = { x: 10, y: 100 } means a = 10, b = 100.
  • Supported a pattern matching syntax in assignment, declaration, and function arguments.
    • var { x: a, y: 100 } = { x: 10, y: m } means a = 10 if m == 100, otherwise an exception occurs.
  • Supported an object key style also with an assignment.
    • { x, y } = { x: 10, y: 100 } means x = 10, y = 100.
  • Relocation of build environment.
    • Created a build directory and moved files needed at building to the build directory.
  • Some bug fixes and improvement.