v0.2.0

Changelog:

• Made the all kind of errors (including the syntax and preemptive errors) print the function call stack trace. (related RFC)
• Fixed an undefined behavior in the operators.
• Errors will be written to stderr instead of stdout.
• Added -u, --unsafe command-line option to disable preemptive error checks.
• Added support of calling functions from imported libraries in the decision blocks like: lib.f1()
• Made parameter evaluation inside decision block in the grammar forbidden.
• Implemented preemptive error checks: (related RFC)
  • Undefined variable checks.
  • Undefined function checks.
  • Incorrect argument count checks.
  • Illegal variable type for function parameter checks.
  • Illegal return type checks.
  • Checks for foreach-ed variables if they are actual lists or dictionaries.
  • Prevent calls to a function with break or continue from outside a loop using a preemptive checks.
  • Prevent calls to a function with break or continue from a multiline loop using a preemptive checks.
• Made compiler use known folders API of Windows.
• Added -l, --license command-line option to print the license text.
• Changed the exit message to Bye bye!.
• Updated the greeting text at the start of the interactive shell (REPL).
• Implemented tail call optimization. (related RFC)
• Fixed memory leaks on function returns.
• Updated the output of symbol_table keyword to include the printing of symbol values.
• Fixed a segmentation fault error.
• Fix the incorrect Program file does not exists on the given path error message.
• Fixed a bug in the operator precendence.