function isPascalcase( value ) {
	return ( isString( value ) && pascalcase( value ) === value );
}
Tests if a value is a string in Pascal case.

@param {*} value - value to test
@returns {boolean} boolean indicating whether a value is a string in Pascal case

@example
var bool = isPascalcase( 'HelloWorld' );
// returns true

@example
var bool = isPascalcase( 'helloWorld' );
// returns false

@example
var bool = isPascalcase( 'HELLO_WORLD' );
// returns false

@example
var bool = isPascalcase( null );
// returns false