Stegseek v0.2

Stegseek got even faster

This release contains a few optimizations that I missed in my first pass. It is roughly 9 times faster than v0.1.
The release also adds a fix for #1 .

The included .deb package can be installed on Ubuntu 20.04.
To install the package, download it and execute the following command:

sudo apt install ./stegseek_0.2-1.deb