Implemented parser

But it wont throw any exceptions if entered string is incorrect (TODO)
and functions not implemented yet
Merge remote-tracking branch 'origin/max' into sem

Conflicts:
	src/com/danilov/bool4j/test/MainTest.java
	src/ru/matlog/bool4j/expression/Expression.java
	src/ru/matlog/bool4j/expression/function/Functions.java
	src/ru/matlog/bool4j/expression/operator/Operators.java
Merge remote-tracking branch 'origin/max' into sem

Conflicts:
	src/com/danilov/bool4j/test/Test1.java
	src/ru/matlog/bool4j/expression/function/Function.java
	src/ru/matlog/bool4j/expression/function/Functions.java
	src/ru/matlog/bool4j/expression/operator/Operator.java
	src/ru/matlog/bool4j/parser/RecursiveParserImpl.java
123
merge