3.0.0

RC1:

• LazyCalculator: allows lazy operators and lazy functions
  • Lazy binary and unary operators
  • Lazy functions
  • AND and OR operators are now lazy
  • if() is now lazy
• addFunctions() no longer accepts callables, use addFunctionsFromCallables()
• Default config additions:
  • NOT operator
  • Functions returning special constants: true(), false(), nan(), inf()
• Binary operator priorities moved to a separate class, Arokettu\ArithmeticParser\Config\BinaryPriority
  • BinaryOperator::PRIORITY_* constants are deprecated

Release:

• defined() lazy function to check if a variable is defined
• setFunctions() no longer accepts callables too
• More granular exceptions for Calculator classes:
  • CalcCallException now has 2 subclasses: UndefinedVariableException and UndefinedFunctionException
  • CalcConfigException is thrown if calculator is misconfigured or duplicate variables are passed
  • CalculatorException interface to catch both CalcCallException and CalcConfigException