Added support for Operators

[jasny]

use Cypress\Curry as C;

$addTen = C\curry('+', 10);
echo $addTen(4); // output 14

$atLeast10 = C\curry('>=', 10);
echo $atLeast10(1) ? 'more' : 'less'; // output less

Operator types
Arithmetic Operators	+, -, *, /, %, **
Bitwise Operators	&, ∣, ^, ~, <<, >>
Comparison Operators	==, ===, !=, !==, <, >, <=, >=
Logical Operators	and/&&, or/∣∣, xor, !/not
String Operator	.