bugs fixed at testing
Merge branch 'master' of github.com:peg4d/peg4d-java
adding e*n -- the repetition of e specified times
removed atleast in PRepetition
adding missing files
adding test files
adding VirtualMachine2
removed vmMatch
adding new scheme
introducing Matcher
introducing type checker of ParsingExpression
renaming ParsingExpression
bugs fixed at ChoiceOptimizer
bugs fixed at ChoiceOptimizer
removed old flags in ParsingExpression
removed old flags in ParsingExpression
enabled detection of left recursion
diff bugs fixed at checkLeftRecursion
updated typeCheck
removed flow in ParsingExpression