Major syntax changes and performance improvements;

=>> What's new:
'while(expr)'     -- before: 'while{expr}
'for(;;)'         -- before: 'for{;;}'
'if(expr;expr)'   -- before: 'if{expr;expr}'
'bool && (expr)'  -- before: 'bool && {expr}'
'bool || (expr)'  -- before: 'bool || {expr}'
'bool ? () : ()'  -- before: 'bool ? {} : {}'

=>> What's gone:
Methods '?', '&&' and '||' are no longer applicable on block objects. The block must be explictly executed ('{...}->run'), in order for methods to be applied on the returned object.