Update submodule
add ParserTestsuite.java
add test suite
added tokenizing of strings
changed namespaces for lexer
changed lexer imports
changed lexer imports
changed lexer imports
changed lexer imports
Add ShiftTest.java
add setCoverage to ASTNodeImpl
changed unsigned numeric values to signed numeric values and changes exception handling
added a first bunch of tests for M2
empty input error fixed
Merge remote-tracking branch 'origin/master' into semantic_analyzer
extended and revised tests
Semantic Analyser: Fixed encoding.
Semantic Analyser: Detect “break outside of loop”
Semantic Analyser: Detect “type of return”
fixed inequal relation bug