Support for Grayscale and other modes

RGB, RGBA, L, and CMYK image modes are now all supported.

File name restrictions for input files have been removed.

Better error handling has been implemented.

LSB Steganography Tool

Steglsb allows for two functions - encoding and decoding. Encoding masks a secret image in a cover image using LSB. Decoding recovers a secret image from an encoded image using LSB.