BlowFish encrypt issue

[skliarovartem]

in encrypt method we need to encrypt all blocks, so:
public function encrypt(block:ByteArray, index:Int32 = 0):Void {
var count:Int = block.length >>> 3;
var i:Int = 0;
for (i in 0...count)
encryptBlock(block, 8 * i, block, 8 * i);
}

[skliarovartem]

same for decrypt:
public function decrypt(block:ByteArray, index:Int32 = 0):Void {
var count:Int = block.length >>> 3;
var i:Int = 0;

    for (i in 0...count)
        decryptBlock(block, 8 * i, block, 8 * i);
}

[soywiz]

Please, do a PR so I can merge it. You should remove index argument then.
Also create a test here that checks the right behaviour:
https://github.com/soywiz/haxe-crypto/blob/master/test/com/hurlant/tests/crypto/symmetric/BlowFishKeyTest.hx