Added deflate/inflate to cloaked files

An input file to be cloaked will first be compressed using zlib's deflate() function before being encrypted. When a file is extracted from an image, it will uncompressed using the inflate() function before being written to disk.

Added CRC check

Performs a CRC check so we know if either the password is wrong or the image doesn't contain a cloaked file

Remove seededXOR encryption

It is pointless additionally encrypting using the the seededXOR algorithm, when the key (image data length) is known. Now only encrypts using AES-256 with a random iv.

Initial release

v1.0.005

Fix PNG to Bitmap