Minimal Point Release

Changes in this release include:

• Closer adherence to PEP 8 conventions.
• POST to a generic /post/ URL rather than including the random URL.
• Generated passphrase and duress key match URL length and character classes.
• Add ISAAC CSPRNG and Blum Blum Shub for generating secure passphrases client-side if the browser does not support the Web Crypto API.
• Many HTML and CSS changes.
• Replace Crypto.Random with os.urandom for RHEL/CentOS 6 compatibility with python-crypto 2.0.
• Bug fixes.