Fixing 'echo' statement
Fixing 'for' statement
Basic implementation of arithmetic-assign operators
Basic logical operator support, improved self assign + operator
Separating hash/string traversal
Using 'for' to traverse hash arrays instead of while
Introducing optimizers
Adding function optimizers
Adding more optimizers
Changing memchr by memstr
Multiple visibility/storage modifiers in properties
Multiple visibility/storage modifiers in methods
Implement 'string' loop traversal
Support for reverse hash loops
Adding starts_with optimizer
Fixing missing headers, fixing function call init
Fixing ZEPHIR_CPY_WRT
Implementing 'fetch' operator
isset-fetch must return an empty zval
Initial travis config