Fix #141: logic operators in constant expressions + fix boolean XOR operator
Fix #129: switch case bug with logic operators
Fix #124: elvis operator in foreach
Fix #127: instace of bug, refactor instanceof operator
Fix #138:  in closures
Fix #138: this in closures
Fix array_pop

Code:
$var = ['AAAAA'];
array_pop($var);

Error:
java.lang.ArrayIndexOutOfBoundsException: -1
Merge pull request #143 from SystemX-Files/master

Fix array_pop
Fix class Time

Code:
$time = new Time(0);
$time->millisecond();

Error:
java.lang.NullPointerException
Merge pull request #144 from SystemX-Files/master

Fix class Time
- removed HexExprValue, BinaryExprValue and OctalExprValue
Merge pull request #145 from POPSuL/integer-refactoring

- removed HexExprValue, BinaryExprValue and OctalExprValue