v3.0.0

Breaking Changes:

• Removed CLI utilities – now to be found at jhermsmeier / hotp-totp-cli

v2.0.0

Breaking Changes:

• Changed hotp( key, counter, digits ) to hotp( key, counter, options )
  to support different HMAC algorithms

Features:

• Added support for Time-Based One-Time Passwords (TOTP) as per RFC 6238
• Added totp CLI command