SnowORHail.g - new grammar that supports nested expressions and nested function/methods calls
Parser.cc - new parser method name "composedStatement_" is used
Executor.cc - a bug in method call was fixed
Makefile - binary file names were modified to snow/hail and snowHailBatch
Number - now provides inrement(++)/decrement(--) for integer
Executor - now provides executeUnaryOperation() (e.g. integerNumber++)
Grammar1 - now provides UnaryOperationNode
Number - ++ ans -- now work.
Grammar1 - UnaryOperationNode was added (replacing MonadicOperatorNode).
Executor - comment was slightly modified.
SnowORHail.g - expression grammar was renewed based on Groovy grammar.

Now the grammar supports nested function/method call as well as for/if statements.
This grammar still generates NullNode entries for empty lines, and therefore,
Parser.cc should take care (i.e. erase) NullNodes to speed up execution.
Number - getIn() now automatically removes "|" in the unit argument.
Grammar - supports UnitValue.
Executor - a bug in "for" was modified.
test_for.code - shows some "for" syntax examples
Executor - modified "import" to work properly.
test_import1.code - confirmed to work.
Array - Array::pushObject() was added.
Number - toString() was added.
Object - getMethods() was added.