Stronger Encryption with random salt file

This release does not bring any new feature for the user but focuses more on the security aspect of the encryption process.

Previously, I was using a fixed salt file due to some encoding errors with os.urandom() module but with this release those issues are gone . So you can expect a much higher security.

Better Encryption

This new release enables the user to encrypt his/her credentials with help of a Master Password using a key deriving function.
Unlike the previous version,which allowed the user to use only computer generated passwords,this one enables the user to use their own passwords.
This also has a few bug fixes.

All in all, this is a lot better over the previous one.